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http://db.apache.org/ 들어가서 subprojects-Dearby-Download 탭선택. 

10.10.1.1 (April 15, 2013 / SVN 1458268) 눌러서

other mirror.apache-kr.org 선택해서 db-derby-10.10.1.1-bin.zip  다운.

압축을 풀고 Apache Derby 로 폴더이름 변경. C:\Program Files에 폴더 붙여넣어줌.

환경변수를 설정하기 위해 환경변수설정창 가서 System variables-New를 넣어서 name에는 DERBY_HOME , value: C:\Program Files\Apache Derby  넣어줌.

그리고 Path에서 Edit 들어가서 마지막에 %DERBY_HOME%\bin; 을 넣어줌.

명령프롬프트 창에가서 set derby_home  해서 설정해줌. set path 로 설정 셋.

cd\ 해서 md derbyroom 을 쳐서 폴더를 하나 만들어줌.  cd derbyroom으로 폴더안으로 들어가서

ij치면 자바 더비를 사용할 수 있음.

거기서 connect 'jdbc:derby:mydb;create=true'; 를 쳐서 디비를 만들어줌.

그리고 CREATE TABLE helloworld 엔터

(

id integer primary key,

pwd varchar(20) NOT NULL

);

해서 테스트를 해보면.

INSERT INTO helloworld VALUES(1, '123456');

INSERT INTO helloworld VALUES(2, '1111');

INSERT INTO helloworld VALUES(3, 'P@$$WOrd'); 

를 입력해주고

SELECT * FROM helloworld; 를 쳐서 입력한 것을 확인.

exit;으로 종료.

이클립스에 들어가서 sql explorer 을 띄어 

new profile에서 driver 에서 add/exit 를  눌러서 Apache Derby-Network Server 선택해서 edit 눌러서

extra Class path 에서 add JARs에서 

C:\Program Files\Apache Derby\lib 에서 derby.jar 선택.

그리고 list Drivers를 눌러주고 Driver class Name을 제일밑에 org.~~~~.EmbeddedDriver 선택.

그리고 Example URL을 jdbc:derby:C:/derbyroom/mydb;create=true; 으로 고쳐줌.(내가 나에게 접속하고 이름은 mydb 로 주었기 때문에). 그리고 ok. ok.

Driver는 지금 설정한 Apache Derby ~~ 선택하고 name은 Derby 하고 user name is not ~~~~~~ 체크

AutoCommit 체크 해서 ok. 

그리고 SELECT * FROM helloworld; 를 선택하면 아까 작성한 것을 볼 수 있다.

지난시간에 TelephoneMgmt를 Derby를 사용하여 해보자.

프로젝트 우측버튼 build path- configuration build path 눌러서 libraries 탭에서 Add External JARs를 눌러 C:\Program Files\Apache Derby\lib에서 derby.jar을 눌러줌.

그래야 Class.forName("org.apache.derby.jdbc.EmbeddedDriver"); 을 쓸수 있음.

dbinfo.properties을 아래처럼 변경.

DBDRIVER=org.apache.derby.jdbc.EmbeddedDriver

DBURL=jdbc:derby:c:/derbyroom/telephone;create=true

main을 아래와 같이 실행시켜주고 테이블을 디비에 만들어줌. 그리고 주석처리를 바꿔줌. 기존 주석처리 안된 것은 주석처리를, 주석처리 되어있는건 풀고.

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

//2. Driver Loading

try {

Class.forName("org.apache.derby.jdbc.EmbeddedDriver");

System.out.println("Loading Success");

} catch (ClassNotFoundException e) {

System.out.println("Class Not Found");

}

//3. Connection

Connection conn = null;

String str = "jdbc:derby:C:/derbyroom/telephone;create=true";

try{

conn = DriverManager.getConnection(str);

System.out.println("Connection Success");

}catch(SQLException ex){

System.out.println("Connection failure");

}

//4. Statement 객체 생성

Statement stmt = null;

try{

stmt = conn.createStatement();

//5. Query 실행

StringBuffer sb = new StringBuffer();

sb.append("CREATE TABLE telephone(");

sb.append("telnum    CHAR(8)  PRIMARY KEY, ");

sb.append("gubun   INTEGER   NOT NULL,");

sb.append("irum    VARCHAR(20)  NOT NULL,");

sb.append("howmany   INTEGER   NOT NULL,");

sb.append("gibon   INTEGER,");

sb.append("fee   INTEGER, ");

sb.append("tax   INTEGER, ");

sb.append("total  INTEGER)");

stmt.executeUpdate(sb.toString());

System.out.println("Table Creation Success");

}catch(SQLException ex){

ex.printStackTrace();

}

try{

if(stmt != null) stmt.close();

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

/*System.out.println("<<전화요금관리프로그램>>");

Scanner scan = new Scanner(System.in);

Main main = new Main();

int choice = 0;

while(true){

choice = main.showMenu(scan);

if(choice == 4) break;

switch(choice){

case 1 : Input input = new Input(scan);  input.input(); break; 

case 2 : Output output = new Output(); break;

//case 3 :

}

}

System.out.println("Program is over...");*/

}

int showMenu(Scanner scan){

System.out.println("1:입력, 2:출력, 3:검색, 4:종료");

System.out.print(">> ");

return scan.nextInt();

}

}

DBConnection.java는 아래와 같이 바꿔줌.

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.sql.Connection;

import java.util.Properties;

public class DBConnection{

private Properties info = null;

private Connection conn = null;

public DBConnection(){

info = new Properties();

try{

info.load(new FileInputStream("D:\\Downloads\\dbinfo.properties"));

}catch(FileNotFoundException ex){ ex.printStackTrace(); 

}catch(IOException ex){ ex.printStackTrace(); }

}

public void loadDriver(){

try{

Class.forName(info.getProperty("DBDRIVER"));

}catch(ClassNotFoundException ex){

System.out.println("Class Not Found");

}

}

public void setConnection(){

String url = info.getProperty("DBURL");

try{

conn = java.sql.DriverManager.getConnection(url);

}catch(java.sql.SQLException ex){

System.out.println("Cannot Connect Access");

}

}

public Connection getConnection(){

if(this.conn != null) return this.conn;

else return null;

}

}

바뀐건 userid, userpwd부분을 삭제한 것.

그리고 실행. 잘됨.

잘되는 것을 확인했으니 지난번에 못한 검색을 추가하는 버전을 만들면.

전화요금관리프로그램 

public class CustomerVO {

private int gubun;

private String telnum;

private String irum;

private int howmany;

private int gibon;

private int fee;

private int tax;

private int total;

public CustomerVO(){}

public CustomerVO(int gubun, String telnum, String irum, int howmany) {

this.gubun = gubun;

this.telnum = telnum;

this.irum = irum;

this.howmany = howmany;

}

@Override

public String toString(){

return String.format("%d\t%s\t%s\t%,d\t%,d\t%,d\t%,d",

                   this.gubun, this.telnum, this.irum, this.gibon,

                   this.fee, this.tax, this.total);

}

public int getGubun() {

return gubun;

}

public void setGubun(int gubun) {

this.gubun = gubun;

}

public String getTelnum() {

return telnum;

}

public void setTelnum(String telnum) {

this.telnum = telnum;

}

public String getIrum() {

return irum;

}

public void setIrum(String irum) {

this.irum = irum;

}

public int getHowmany() {

return howmany;

}

public void setHowmany(int howmany) {

this.howmany = howmany;

}

public int getGibon() {

return gibon;

}

public void setGibon(int gibon) {

this.gibon = gibon;

}

public int getFee() {

return fee;

}

public void setFee(int fee) {

this.fee = fee;

}

public int getTax() {

return tax;

}

public void setTax(int tax) {

this.tax = tax;

}

public int getTotal() {

return total;

}

public void setTotal(int total) {

this.total = total;

}

}

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

/* //2. Driver Loading

try {

Class.forName("org.apache.derby.jdbc.EmbeddedDriver");

System.out.println("Loading Success");

} catch (ClassNotFoundException e) {

System.out.println("Class Not Found");

}

//3. Connection

Connection conn = null;

String str = "jdbc:derby:C:/derbyroom/telephone;create=true";

try{

conn = DriverManager.getConnection(str);

System.out.println("Connection Success");

}catch(SQLException ex){

System.out.println("Connection failure");

}

//4. Statement 객체 생성

Statement stmt = null;

try{

stmt = conn.createStatement();

//5. Query 실행

StringBuffer sb = new StringBuffer();

sb.append("CREATE TABLE telephone(");

sb.append("telnum    CHAR(8)  PRIMARY KEY, ");

sb.append("gubun   INTEGER   NOT NULL,");

sb.append("irum    VARCHAR(20)  NOT NULL,");

sb.append("howmany   INTEGER   NOT NULL,");

sb.append("gibon   INTEGER,");

sb.append("fee   INTEGER, ");

sb.append("tax   INTEGER, ");

sb.append("total  INTEGER)");

stmt.executeUpdate(sb.toString());

System.out.println("Table Creation Success");

}catch(SQLException ex){

ex.printStackTrace();

}

try{

if(stmt != null) stmt.close();

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}*/

System.out.println("<<전화요금관리프로그램>>");

Scanner scan = new Scanner(System.in);

Main main = new Main();

int choice = 0;

while(true){

choice = main.showMenu(scan);

if(choice == 4) break;

switch(choice){

case 1 : Input input = new Input(scan);  input.input(); break; 

case 2 : Output output = new Output(); break;

case 3 : Search search = new Search(scan); search.search(); break;

}

}

System.out.println("Program is over...");

}

int showMenu(Scanner scan){

System.out.println("1:입력, 2:출력, 3:검색, 4:종료");

System.out.print(">> ");

return scan.nextInt();

}

}

import java.util.Scanner;

public class Input {

private Scanner scan;

Input(Scanner scan){

this.scan = scan;

}

void input(){

System.out.print("구분 : ");   int gubun = this.scan.nextInt();

System.out.print("전화번호 : "); String telnum = this.scan.next();

this.scan.nextLine();

System.out.print("성명 : "); String irum = this.scan.nextLine();

System.out.print("통화량 : ");  int howmany = this.scan.nextInt();

this.scan.nextLine();

CustomerVO c = new CustomerVO(gubun, telnum, irum, howmany);

Calc calc = new Calc(c);

CustomerController.insert(c);

}

}

import java.util.Scanner;

import java.util.Vector;

public class Search {

private Scanner scan;

Search(Scanner scan){

this.scan = scan;

}

void search(){

System.out.print("1.이름으로 검색,  2. 전화번호로 검색 : ");

int choice = this.scan.nextInt();

this.scan.nextLine();

String sql = null;

if(choice == 1){  //이름으로 검색

System.out.print("이름 : ");

String name = scan.nextLine();

sql = "SELECT * FROM telephone WHERE irum = '" + name + "' ";

}else if(choice == 2){   //전화번호로 검색

System.out.print("전화번호 : ");

String telnum = scan.nextLine();

sql = "SELECT * FROM telephone WHERE telnum = '" + telnum + "' ";

}

Vector<CustomerVO> vector = CustomerController.search(sql);

if(vector == null){

System.out.println("조건에 맞는 데이터가 없습니다.");

}

else{

for(int i = 0 ; i < vector.size() ; i++){

CustomerVO c = vector.get(i);

System.out.println(c);

}

}

}

}

public class Calc {

private CustomerVO c;

Calc(CustomerVO c){

this.c = c;

calc();

}

void calc(){

//1)입력되는 값이 구분이 1이면 영업용, 2이면 관청용, 3이면 가정용이다.

int gibon = (c.getGubun() == 1) ? 6000 :

                 (c.getGubun() == 2) ? 4800 : 3000;

//2)기본요금은 영업용이 6,000원, 관청용이 4,800원, 가정용이 3,000원이다.

//3)통화료는 1통화에 대하여 12원이다.

int fee = c.getHowmany() * 12;

//4)세금은 기본 요금과 통화료를 합한 금액의 10%를 부과한다.

int tax = (int)((gibon + fee) * 0.1);

int total = gibon + fee + tax;

c.setGibon(gibon);

c.setFee(fee);

c.setTax(tax);

c.setTotal(total);

}

}

import java.sql.Connection;

import java.util.Vector;

public class CustomerController {

public static Vector<CustomerVO> search(String sql){

DBConnection db = new DBConnection();

db.loadDriver();

db.setConnection();

Connection conn = db.getConnection();

Vector<CustomerVO> vector = CustomerDAO.search(conn, sql);

DBClose.close(conn);

return vector;

}

public static void insert(CustomerVO c){

DBConnection db = new DBConnection();

db.loadDriver();

db.setConnection();

Connection conn = db.getConnection();

CustomerDAO.insert(conn, c);

DBClose.close(conn);

}

public static Vector <CustomerVO> select(){

DBConnection db = new DBConnection();

db.loadDriver();

db.setConnection();

Connection conn = db.getConnection();

Vector<CustomerVO> vector = CustomerDAO.select(conn);

DBClose.close(conn);

return vector;

}

}

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.Vector;

public class CustomerDAO {

public static Vector<CustomerVO> search(Connection conn, String sql){

Vector<CustomerVO> vector = null;

Statement stmt = null;

ResultSet rs = null;

try{

stmt = conn.createStatement();

rs = stmt.executeQuery(sql);

if(rs.next()){ //있다면

vector = new Vector<CustomerVO>(1,1); //동명이인이 있을 수도있어 (1) 대신 (1,1)

do{

CustomerVO c = new CustomerVO();

c.setGubun(rs.getInt("gubun"));

c.setTelnum(rs.getString("telnum"));

c.setIrum(rs.getString("irum"));

c.setGibon(rs.getInt("gibon"));

c.setFee(rs.getInt("fee"));

c.setTax(rs.getInt("tax"));

c.setTotal(rs.getInt("total"));

vector.addElement(c);

}while(rs.next());

}

rs.close();

stmt.close();

}catch(SQLException ex){

ex.printStackTrace();

}

return vector;

}

public static Vector<CustomerVO> select(Connection conn){

Statement stmt = null;

ResultSet rs = null;

Vector<CustomerVO> vector = new Vector<CustomerVO>(1,1);

try {

stmt = conn.createStatement();

String sql = "SELECT * FROM Telephone";

rs = stmt.executeQuery(sql);

while(rs.next()){

CustomerVO c = new CustomerVO();

c.setGubun(rs.getInt("gubun"));

c.setTelnum(rs.getString("telnum"));

c.setIrum(rs.getString("irum"));

c.setGibon(rs.getInt("gibon"));

c.setFee(rs.getInt("fee"));

c.setTax(rs.getInt("tax"));

c.setTotal(rs.getInt("total"));

vector.addElement(c);

}

rs.close();

stmt.close();

} catch (SQLException e) {

e.printStackTrace();

}

return vector;

}

public static void insert(Connection conn, CustomerVO c){

Statement stmt = null;

try {

stmt = conn.createStatement();

StringBuffer sb = new StringBuffer("INSERT INTO Telephone ");

sb.append("VALUES('" + c.getTelnum() + "'," + c.getGubun());

sb.append(",'" + c.getIrum() + "'," + c.getHowmany());

sb.append("," + c.getGibon() + "," + c.getFee() + "," + c.getTax());

sb.append("," + c.getTotal() + ")");

//System.out.println(sb.toString());

stmt.executeUpdate(sb.toString());

stmt.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

}

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

public class DBClose {

public static void close(Connection conn){

try{

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

public static void close(Connection conn, Statement stmt){

try{

if(stmt != null) stmt.close();

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

public static void close(Connection conn, Statement stmt, ResultSet rs){

try{

if(rs != null) rs.close();

if(stmt != null) stmt.close();

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

}

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.sql.Connection;

import java.util.Properties;

public class DBConnection{

private Properties info = null;

private Connection conn = null;

public DBConnection(){

info = new Properties();

try{

info.load(new FileInputStream("D:\\Downloads\\dbinfo.properties"));

}catch(FileNotFoundException ex){ ex.printStackTrace(); 

}catch(IOException ex){ ex.printStackTrace(); }

}

public void loadDriver(){

try{

Class.forName(info.getProperty("DBDRIVER"));

}catch(ClassNotFoundException ex){

System.out.println("Class Not Found");

}

}

public void setConnection(){

String url = info.getProperty("DBURL");

try{

conn = java.sql.DriverManager.getConnection(url);

}catch(java.sql.SQLException ex){

System.out.println("Cannot Connect Access");

}

}

public Connection getConnection(){

if(this.conn != null) return this.conn;

else return null;

}

}

import java.util.Vector;

public class Output {

Output(){

Vector<CustomerVO> vector = CustomerController.select();

for(int i = 0 ; i < vector.size() ; i++){

CustomerVO c = vector.get(i);

System.out.println(c);

}

}

}

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ=====================================================================================================

리눅스에서 

리눅스에서도 http://db.apache.org/에 접속해서 derby-download에서 db-derby-10.10.1.1-src.tar.gz 다운.

압축을 푼후 폴더이름을 Derby 로 변경. 터미널 켜서 Derby 폴더가 있는 곳으로 가서 sudo mv Derby /usr/lib/jvm 로 폴더이동.

sudo gedit /etc/profile 로 들어가서.

예전에 자바세팅한 것을

#----------------------------------------------

# Java Settings

#----------------------------------------------

JAVA_HOME=/usr/lib/jvm/jdk1.7.0_51

DERBY_HOME=/usr/lib/jvm/Derby

CLASSPATH=.:/usr/lib/jvm/jdk1.7.0_51/lib/tools.jar

PATH=$JAVA_HOME/bin/:$PATH:$DERBY_HOME/bin

export JAVA_HOME

export DERBY_HOME

export CLASSPATH

export PATH

위와 같이 변경. 터미널에서 source /etc/profile 엔터.

echo $PATH으로 확인.

home으로 가서(/home/mino)  mkdir DerbyRoom 하나 만들어줌.

만들어준 폴더에 들어가서

ij

connect 'jdbc:derby:mydb;create=true';

CREATE TABLE helloworld

(

id integer primary key,

pwd varchar(20) not null);

INSERT INTO helloworld VALUES(1, '123456');

INSERT INTO helloworld VALUES(2, 'P@$$W0rd');

SELECT * FROM helloworld;

이클립스에 sql explorer 사용을 위해서.

구글에서 sql explorer 검색 해서 Eclipse SQL Explorer들어가서 download 들어가서 SQL Explorer Plugin 누르고  

3.6.1- sqlexplorer_plugin-3.6.1_SR6.zip 눌러서 다운. 압축풀고 이클립스폴더에 feature폴더 plugins 폴더에 각각 넣어줌.

이클립스를 다시켜서 sql explore를 열어서 new profile 에서 add/edit drivers 선택해서 apach derby 를 선택해 edit 해서  

add jars 해서  /usr/lib/jvm/Derby/lib/derby.jar 선택. list Drivers 누르고 

driver class name 을 org.~~~~.EmbeddedDriver 선택. example URL 을  jdbc:derby:/home/mino/DerbyRoom/mydb;create=true; 써줌.

ok누르고 Name은 Derby User name is~~~ 체크 auto commit 체크.

cd /usr/lib/jvm/Derby/lib 에 들어가서 chmod +x *.* 을 써서 실행 가능하게 함. 그리고 이 위치에서 java -jar derbyrun.jar server start  엔터를 하면  쭈르륵 뜬걸 볼 수 있다.(에러발생?)

gedit을 열어서 open 해서 /usr/lib/jvm/jdk_1.7.0_51/jre/lib/security/java.policy 를 열어줌. 

여기서 23번째 줄에서 localhost:1527로 바꿔줌.

그리고 위에 java -jar derbyrun.jar server start를 다시 써주면. started 된것을 볼 수 있다.

또 다른 확인 방법 하나- 터미널을 하나 더 켜서 netstat -ap | grep "LISTEN" 엔터.

기존것을 다 지우고 new profile 에서  add/edit 해서 extra class path에서 /usr/lib/jvm/Derby/lib/derbyclient.jar 해주고 

list Drivers 누르면 Driver Class Name 을 org.apache.derby.jdbc.ClientDriver를 선택.

URL은 jdbc:derby://localhost:1527/mydb;create=true; 해주고. Name은 NetworkDerby

아까 started 된 것은 계속 되고 있어야함. 

서버 종료는 cd /usr/lib/jvm/Derby/lib 이동해서

java -jar derbyrun.jar server shutdown  하면 서버를 종료할 수 있다.

우분투(클라이언트)에서 버츄얼우분투의 접속은

서버측에서 java -jar derbyrun.jar server start -h 자기아이피 해서 서버를 열고 

클라이언트에서 접속하면 성공. 그리고 서버측에서 /usr/lib/jvm/Derby/lib/mydb 가 있는 것을 볼 수있다.

(클라이언트 측에서는 jdbc:derby://서버아이피:1527/mydb;create=true; 

서버측에서는 위의 리눅스 시작부분부터 여기서 23번째 줄에서 localhost:1527로 바꿔줌.부분까지 설정. 하면됨)

ODBC 설정. Control Panel\All Control Panel Items\Administrative Tools\ODBC Data Sources 들어가서

System DSN 탭에서 Add눌러서 .mdb or .accdb 택하고 확인. data source name에 이름(난 school) 써주고(ODBC 이름), 데이터베이스 선택 을 눌러서 사용할 액세스파일(이미 만든 school)을 지정해줌.

advanced 누르면 아이디 비번을 정해줄 수 있다. 아디scott, 비번tiger  해줌.

그리고 이클립스에서 window- other perspective 에서 sql Explorer 선택.

new-connection profile에서 name은 아무거나, Driver는 jdbc odbc bridget 해주고 URL : jdbc:odbc:school(school은 아까정한 odbc이름). User는 scott, password는 tiger.

Auto Logon 과 Auto Commit 체크.

메모장을 열어 아래와 같이 적어서 저장해줌. dbinfo.properties 로 모든파일로 저장해서 d: downloads폴더에 저장.

DBDRIVER=sun.jdbc.odbc.JdbcOdbcDriver

DBURL=jdbc:odbc:school

DBUSER=scott

DBPWD=tiger

여기까진 설정.

3/27성적관리프로그램에서 디비추가(원본보기만활성화)

public class Student implements Comparable<Student> {

private String hakbun, name;

private int kor, eng, mat, edp, tot, ranking;

private double avg;

private char grade;

public Student(){}

public Student(String hakbun, String name, int kor, int eng, int mat, int edp) {

this.hakbun = hakbun;

this.name = name;

this.kor = kor;

this.eng = eng;

this.mat = mat;

this.edp = edp;

this.ranking = 1;

}

@Override

public int compareTo(Student s){

return this.getTot() - s.getTot();

}

public String [] toArray(){

String [] array = new String[10];

array[0] = this.hakbun;   array[1] = this.name;

array[2] = String.valueOf(this.kor);       array[3] = String.valueOf(this.eng);     

array[4] = String.valueOf(this.mat);       array[5] = String.valueOf(this.edp);     

array[6] = String.valueOf(this.tot);         array[7] = String.valueOf(this.avg);

array[8] = String.valueOf(this.grade);    array[9] = String.valueOf(this.ranking);          

return array;

}

@Override

public String toString(){

return String.format("%-10s%7s%5d%5d%5d%5d%5d%10.2f%5c%5d\n",

this.hakbun, this.name, this.kor, this.eng, this.mat, this.edp,

this.tot, this.avg, this.grade, this.ranking);

}

public String getHakbun() {

return hakbun;

}

public void setHakbun(String hakbun) {

this.hakbun = hakbun;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getKor() {

return kor;

}

public void setKor(int kor) {

this.kor = kor;

}

public int getEng() {

return eng;

}

public void setEng(int eng) {

this.eng = eng;

}

public int getMat() {

return mat;

}

public void setMat(int mat) {

this.mat = mat;

}

public int getEdp() {

return edp;

}

public void setEdp(int edp) {

this.edp = edp;

}

public int getTot() {

return tot;

}

public void setTot(int tot) {

this.tot = tot;

}

public int getRanking() {

return ranking;

}

public void setRanking(int ranking) {

this.ranking = ranking;

}

public double getAvg() {

return avg;

}

public void setAvg(double avg) {

this.avg = avg;

}

public char getGrade() {

return grade;

}

public void setGrade(char grade) {

this.grade = grade;

}

}

import java.awt.Container;

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.Statement;

import java.util.Vector;

import javax.swing.JFrame;

import javax.swing.JTabbedPane;

public class Main {

private JFrame f;

private JTabbedPane tab;

private Container con;

private Main(){

this.f = new JFrame("성적관리프로그램 V3.0");

this.tab = new JTabbedPane();

this.con = this.f.getContentPane();

}

private void display(){

this.f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.f.setResizable(false);

this.tab.addTab("일반데이터입력", new InputPanel(this.f, this.tab));

this.tab.addTab("데이터출력", new OutputPanel(this.f));

this.con.add(this.tab);

this.f.setSize(500, 400);

this.f.setLocationRelativeTo(null);

this.f.setVisible(true);

}

public static void main(String[] args) {

new Main().display();

}

}

import java.util.Vector;

public class Calc {

private Vector<Student> vector;

public Calc(Vector<Student> vector) {

this.vector = vector;

}

public void calc(){

for(int i = 0 ; i < this.vector.size() ; i++){

Student s = this.vector.get(i);

s.setTot(s.getKor() + s.getEng() + s.getMat() + s.getEdp());

s.setAvg(s.getTot() / 4.);

s.setGrade(this.getGrade(s.getAvg()));

}

}

private char getGrade(double avg){

if(avg <=100 && avg >= 90) return 'A';

else if(avg < 90 && avg >= 80) return 'B';

else if(avg < 80 && avg >= 70) return 'C';

else if(avg < 70 && avg >= 60) return 'D';

else return 'F';

}

}

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

public class DBClose {

public static void close(Connection conn){

try{

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

public static void close(Connection conn, Statement stmt){

try{

if(stmt != null) stmt.close();

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

public static void close(Connection conn, Statement stmt, ResultSet rs){

try{

if(rs != null) rs.close();

if(stmt != null) stmt.close();

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

}

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.sql.Connection;

import java.util.Properties;

public class DBConnection{

private Properties info = null;

private Connection conn = null;

public DBConnection(){

info = new Properties();

try{

info.load(new FileInputStream("D:\\Downloads\\dbinfo.properties"));

}catch(FileNotFoundException ex){ ex.printStackTrace(); 

}catch(IOException ex){ ex.printStackTrace(); }

}

public void loadDriver(){

try{

Class.forName(info.getProperty("DBDRIVER"));

}catch(ClassNotFoundException ex){

System.out.println("Class Not Found");

}

}

public void setConnection(){

String url = info.getProperty("DBURL");

String user = info.getProperty("DBUSER");

String passwd = info.getProperty("DBPASSWORD");

try{

conn = java.sql.DriverManager.getConnection(url, user, passwd);

}catch(java.sql.SQLException ex){

System.out.println("Cannot Connect Access");

}

}

public Connection getConnection(){

if(this.conn != null) return this.conn;

else return null;

}

}

import java.awt.BorderLayout;

import java.awt.Font;

import java.awt.GridLayout;

import java.util.Vector;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTabbedPane;

import javax.swing.JTextField;

import javax.swing.border.TitledBorder;

public class InputPanel extends JPanel {

private JFrame f;

private JLabel lblHakbun, lblName, lblKor,lblEng, lblMat, lblEdp;

private JTextField tfHakbun, tfName, tfKor, tfEng, tfMat, tfEdp;

private JButton btnContinue, btnBreak;

private Font font;

private JTabbedPane tab;

public InputPanel(JFrame f, JTabbedPane tab) {

this.f = f;

this.tab = tab;

this.font = new Font("NanumGotic", Font.PLAIN, 20);

this.setLayout(new BorderLayout());

this.add("Center", getCenter());

this.add("South", getSouth());

}

private JPanel getSouth(){

JPanel p = new JPanel();

p.add(this.btnContinue = new JButton("입력하기"));

this.btnContinue.setFont(font);

this.btnContinue.addActionListener(

new InputAction(this.f, this.tab, this.tfHakbun, tfName, 

                     this.tfKor, this.tfEng, this.tfMat, this.tfEdp));

p.add(this.btnBreak = new JButton("출력하기"));

this.btnBreak.setFont(font);

this.btnBreak.addActionListener(

new InputAction(this.f, this.tab, this.tfHakbun, tfName, 

                     this.tfKor, this.tfEng,this.tfMat, this.tfEdp));

return p;

}

private JPanel getCenter(){

JPanel p, inner;

inner = new JPanel();

inner.setBorder(new TitledBorder("성적데이터입력"));

inner.setLayout(new GridLayout(6,2,10,10));

inner.add(this.lblHakbun = new JLabel("학번"));

this.lblHakbun.setFont(font);

inner.add(this.tfHakbun = new JTextField(10));

this.tfHakbun.setFont(font);

inner.add(this.lblName = new JLabel("이름"));

this.lblName.setFont(font);

inner.add(this.tfName = new JTextField());

this.tfName.setFont(font);

inner.add(this.lblKor = new JLabel("국어"));

this.lblKor.setFont(font);

inner.add(this.tfKor = new JTextField());

this.tfKor.setFont(font);

inner.add(this.lblEng = new JLabel("영어"));

this.lblEng.setFont(font);

inner.add(this.tfEng = new JTextField());

this.tfEng.setFont(font);

inner.add(this.lblMat = new JLabel("수학"));

this.lblMat.setFont(font);

inner.add(this.tfMat = new JTextField());

this.tfMat.setFont(font);

inner.add(this.lblEdp = new JLabel("전산"));

this.lblEdp.setFont(font);

inner.add(this.tfEdp = new JTextField());

this.tfEdp.setFont(font);

p = new JPanel();

p.add(inner);

return p;

}

}

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.Vector;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JTabbedPane;

import javax.swing.JTextField;

public class InputAction implements ActionListener {

private JFrame f;

private JTabbedPane tab;

private JTextField tfHakbun, tfName, tfKor, tfEng, tfMat, tfEdp;

public InputAction(JFrame f, JTabbedPane tab,

JTextField tfHakbun, JTextField tfName, JTextField tfKor,

JTextField tfEng, JTextField tfMat, JTextField tfEdp) {

this.f = f;

this.tab = tab;

this.tfHakbun = tfHakbun;

this.tfName = tfName;

this.tfKor = tfKor;

this.tfEng = tfEng;

this.tfMat = tfMat;

this.tfEdp = tfEdp;

}

@Override

public void actionPerformed(ActionEvent e) {

if(e.getActionCommand().equals("입력하기")){

if(!this.check()){

JOptionPane.showMessageDialog(this.f, "입력되지 않은 데이터가 있습니다.", 

"Warning", JOptionPane.WARNING_MESSAGE);

this.tfHakbun.requestFocus();

}else{  //모두 입력했다면

Student s = new Student(this.tfHakbun.getText().trim(), 

                                this.tfName.getText().trim(),

                                Integer.parseInt(this.tfKor.getText().trim()),

                                Integer.parseInt(this.tfEng.getText().trim()),

                                Integer.parseInt(this.tfMat.getText().trim()),

                                Integer.parseInt(this.tfEdp.getText().trim()));

StudentController.insert(s);

JOptionPane.showMessageDialog(this.f, "입력됐습니다.", 

"Success", JOptionPane.INFORMATION_MESSAGE);

this.tfHakbun.setText("");  this.tfName.setText("");

this.tfKor.setText("");  this.tfEng.setText("");

this.tfMat.setText("");  this.tfEdp.setText("");

}

}else if(e.getActionCommand().equals("출력하기")){

this.tab.setSelectedIndex(1);

}

}

private boolean check(){

if(this.tfHakbun.getText().length() == 0 || 

this.tfName.getText().length() == 0 ||

this.tfKor.getText().length() == 0 ||

this.tfEng.getText().length() == 0 ||

this.tfMat.getText().length() == 0 ||

this.tfEdp.getText().length() == 0) return false;

else return true;

}

}

import java.util.Vector;

public class Output {

private Vector<Student> vector;

public Output(Vector<Student> vector) {

this.vector = vector;

}

public void output(){

printLabel();

for(int i = 0 ; i < this.vector.size() ; i++)

System.out.print(this.vector.elementAt(i));

}

private void printLabel(){

System.out.println("                      <<�깆쟻愿�━�꾨줈洹몃옩>>");

}

}

import java.awt.BorderLayout;

import java.util.Vector;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.ListSelectionModel;

public class OutputPanel extends JPanel{

private JFrame f;

private JScrollPane pane;

private JTable table;

private JButton btnOriginal, btnCalc, btnSort, btnDelete;

private JPanel p;

OutputPanel(JFrame f) {

this.f = f;

this.p = new JPanel();

this.table = new JTable();

//this.table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

this.btnOriginal = new JButton("원본보기");

this.btnOriginal.addActionListener(new OutputAction(this.f, this.table));

this.btnCalc = new JButton("계산하기");

this.btnCalc.addActionListener(new OutputAction(this.f, this.table));

this.btnSort = new JButton("정렬하기");

this.btnSort.addActionListener(new OutputAction(this.f, this.table));

this.btnDelete = new JButton("삭제하기");

this.btnDelete.addActionListener(new OutputAction(this.f, this.table));

pane = new JScrollPane(this.table, 

JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,

JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

this.setLayout(new BorderLayout());

this.add("Center", pane);

this.p.add(this.btnOriginal);  this.p.add(this.btnCalc);  this.p.add(this.btnSort);  

this.p.add(this.btnDelete);

this.add("North", p);

}

}

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.Vector;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JTable;

public class OutputAction implements ActionListener {

private JFrame f;

private JTable table;

OutputAction(JFrame f, JTable table){

this.f = f;

this.table = table;

}

@Override

public void actionPerformed(ActionEvent e) {

switch(e.getActionCommand()){

case "원본보기": viewOriginal(); break;

//case "계산하기": calc(); break;

//case "정렬하기": sort(); break;

//case "삭제하기": delete(); break;

}

}

/*private void delete() {

int [] array = this.table.getSelectedRows();  //1,3,5

for(int i = array.length - 1 ; i >= 0 ; i--){

this.vector.removeElementAt(array[i]);

}

this.sort();

}*/

private void viewOriginal(){  //원본보기

this.table.setModel(new StudentModel(6));

}

/*private void calc(){

Calc calc = new Calc(this.vector);

calc.calc();

this.table.setModel(new StudentModel(this.vector, 9));

}*/

/*private void sort(){

Sort sort = new Sort(this.vector);

sort.sort();

this.table.setModel(new StudentModel(this.vector, 10));

}*/

}

import java.util.Vector;

public class Sort {

private Vector<Student> vector;

public Sort(Vector<Student> vector) {

this.vector = vector;

for(int i = 0 ; i < this.vector.size() ; i++)

this.vector.get(i).setRanking(1);

}

public void sort(){   //��궧���꾪븳 �좏깮�뺣젹

for(int i = 0 ; i < this.vector.size() - 1 ; i++){

for(int j = i +1 ; j < this.vector.size() ; j++){

if(this.vector.get(i).compareTo(this.vector.get(j)) > 0){

this.vector.get(j).setRanking(this.vector.get(j).getRanking() + 1);

}else if(this.vector.get(i).compareTo(this.vector.get(j)) < 0){

this.vector.get(i).setRanking(this.vector.get(i).getRanking() +1);

}

}

}

}

}

import java.sql.Connection;

import java.util.Vector;

public class StudentController {

public static void insert(Student s) {

DBConnection conn = new DBConnection();

conn.loadDriver();

conn.setConnection();

Connection con = conn.getConnection();

StudentDAO.insert(con, s);

DBClose.close(con);

}

public static Vector<Student> select() {

DBConnection conn = new DBConnection();

conn.loadDriver();

conn.setConnection();

Connection con = conn.getConnection();

String sql = "SELECT hakbun, irum, kor, eng, mat, edp ";

sql += " FROM Student";

Vector<Student> vector = StudentDAO.getAllData(con, sql, false);

DBClose.close(con);

return vector;

}

}

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.Vector;

public class StudentDAO {

//원본보기

public static Vector<Student> getAllData(Connection conn, String sql, boolean isFull){

Vector<Student> vector = new Vector<Student>(1,1);

Statement stmt = null;

ResultSet rs = null;

try {

stmt = conn.createStatement();

rs = stmt.executeQuery(sql);

while(rs.next()){

Student s = new Student();

s.setHakbun(rs.getString("hakbun"));

s.setName(rs.getString("irum"));

s.setKor(rs.getInt("kor"));

s.setEng(rs.getInt("eng"));

s.setMat(rs.getInt("mat"));

s.setEdp(rs.getInt("edp"));

if(false){

s.setTot(rs.getInt("tot"));

s.setAvg(rs.getDouble("avg"));

s.setGrade(rs.getString("grade").charAt(0));  //"A" --> 'A'

}

vector.addElement(s);

}

} catch (SQLException e) {

e.printStackTrace();

}

return vector;

}

//학번으로 검색

public static Vector<Student> getOneData(Connection conn, String hakbun){

Vector<Student> vector = new Vector<Student>(1);

Statement stmt = null;   ResultSet rs = null;

try {

stmt = conn.createStatement();

String sql = "SELECT * FROM Student WHERE hakbun = '" + hakbun + "' ";

rs = stmt.executeQuery(sql);

rs.next();

Student s = new Student();

s.setHakbun(rs.getString("hakbun"));

s.setName(rs.getString("irum"));

s.setKor(rs.getInt("kor"));

s.setEng(rs.getInt("eng"));

s.setMat(rs.getInt("mat"));

s.setEdp(rs.getInt("edp"));

vector.addElement(s);

rs.close();

stmt.close();

} catch (SQLException e) {

e.printStackTrace();

}

return vector;

}

public static void insert(Connection conn, Student s){

Statement stmt = null;

try {

stmt = conn.createStatement();

String sql = "INSERT INTO Student(hakbun, irum, kor, eng, mat, edp) ";

sql += "VALUES('" + s.getHakbun() + "', '" + s.getName() + "', ";

sql += s.getKor() + ", " + s.getEng() + ", " + s.getMat() + ", ";

sql += s.getEdp() + ")";

stmt.executeUpdate(sql);

stmt.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

}

import java.sql.Connection;

import java.util.Vector;

import javax.swing.table.DefaultTableModel;

public class StudentModel extends DefaultTableModel {

private int choice;

public StudentModel(int choice) {

this.choice = choice;

setModelData();

}

private void setModelData(){

Vector<String> columnVector = new Vector<String>(1,1);

String [] array = {"학번", "이름", "국어", "영어", "수학", "전산", "총점",

                  "평균", "학점", "등수"};

for(int i = 0 ; i < this.choice ; i++)  columnVector.addElement(array[i]);

Vector<Student> dataVector = StudentController.select();

Vector<Object> tableVector = new Vector<Object>(1,1);

for(int i = 0 ; i < dataVector.size() ; i++){

Vector<String> tempVector = new Vector<String>(1,1);

Student s = dataVector.get(i);

tempVector.addElement(s.getHakbun());

tempVector.addElement(s.getName());

tempVector.addElement(String.valueOf(s.getKor()));

tempVector.addElement(String.valueOf(s.getEng()));

tempVector.addElement(String.valueOf(s.getMat()));

tempVector.addElement(String.valueOf(s.getEdp()));

tableVector.addElement(tempVector);

}

this.setDataVector(tableVector, columnVector);

}

}

------------------------------------------------------------------------------

================================================================================

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

전화요금관리프로그램 (찾기기능없음), 

public class CustomerVO {

private int gubun;

private String telnum;

private String irum;

private int howmany;

private int gibon;

private int fee;

private int tax;

private int total;

public CustomerVO(){}

public CustomerVO(int gubun, String telnum, String irum, int howmany) {

this.gubun = gubun;

this.telnum = telnum;

this.irum = irum;

this.howmany = howmany;

}

@Override

public String toString(){

return String.format("%d\t%s\t%s\t%,d\t%,d\t%,d\t%,d",

                   this.gubun, this.telnum, this.irum, this.gibon,

                   this.fee, this.tax, this.total);

}

public int getGubun() {

return gubun;

}

public void setGubun(int gubun) {

this.gubun = gubun;

}

public String getTelnum() {

return telnum;

}

public void setTelnum(String telnum) {

this.telnum = telnum;

}

public String getIrum() {

return irum;

}

public void setIrum(String irum) {

this.irum = irum;

}

public int getHowmany() {

return howmany;

}

public void setHowmany(int howmany) {

this.howmany = howmany;

}

public int getGibon() {

return gibon;

}

public void setGibon(int gibon) {

this.gibon = gibon;

}

public int getFee() {

return fee;

}

public void setFee(int fee) {

this.fee = fee;

}

public int getTax() {

return tax;

}

public void setTax(int tax) {

this.tax = tax;

}

public int getTotal() {

return total;

}

public void setTotal(int total) {

this.total = total;

}

}

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

System.out.println("<<전화요금관리프로그램>>");

Scanner scan = new Scanner(System.in);

Main main = new Main();

int choice = 0;

while(true){

choice = main.showMenu(scan);

if(choice == 4) break;

switch(choice){

case 1 : Input input = new Input(scan);  input.input(); break; 

case 2 : Output output = new Output(); break;

//case 3 :

}

}

System.out.println("Program is over...");

}

int showMenu(Scanner scan){

System.out.println("1:입력, 2:출력, 3:검색, 4:종료");

System.out.print(">> ");

return scan.nextInt();

}

}

import java.util.Scanner;

public class Input {

private Scanner scan;

Input(Scanner scan){

this.scan = scan;

}

void input(){

System.out.print("구분 : ");   int gubun = this.scan.nextInt();

System.out.print("전화번호 : "); String telnum = this.scan.next();

this.scan.nextLine();

System.out.print("성명 : "); String irum = this.scan.nextLine();

System.out.print("통화량 : ");  int howmany = this.scan.nextInt();

this.scan.nextLine();

CustomerVO c = new CustomerVO(gubun, telnum, irum, howmany);

Calc calc = new Calc(c);

CustomerController.insert(c);

}

}

public class Calc {

private CustomerVO c;

Calc(CustomerVO c){

this.c = c;

calc();

}

void calc(){

//1)입력되는 값이 구분이 1이면 영업용, 2이면 관청용, 3이면 가정용이다.

int gibon = (c.getGubun() == 1) ? 6000 :

                 (c.getGubun() == 2) ? 4800 : 3000;

//2)기본요금은 영업용이 6,000원, 관청용이 4,800원, 가정용이 3,000원이다.

//3)통화료는 1통화에 대하여 12원이다.

int fee = c.getHowmany() * 12;

//4)세금은 기본 요금과 통화료를 합한 금액의 10%를 부과한다.

int tax = (int)((gibon + fee) * 0.1);

int total = gibon + fee + tax;

c.setGibon(gibon);

c.setFee(fee);

c.setTax(tax);

c.setTotal(total);

}

}

import java.sql.Connection;

import java.util.Vector;

public class CustomerController {

public static void insert(CustomerVO c){

DBConnection db = new DBConnection();

db.loadDriver();

db.setConnection();

Connection conn = db.getConnection();

CustomerDAO.insert(conn, c);

DBClose.close(conn);

}

public static Vector <CustomerVO> select(){

DBConnection db = new DBConnection();

db.loadDriver();

db.setConnection();

Connection conn = db.getConnection();

Vector<CustomerVO> vector = CustomerDAO.select(conn);

DBClose.close(conn);

return vector;

}

}

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.Vector;

public class CustomerDAO {

public static Vector<CustomerVO> select(Connection conn){

Statement stmt = null;

ResultSet rs = null;

Vector<CustomerVO> vector = new Vector<CustomerVO>(1,1);

try {

stmt = conn.createStatement();

String sql = "SELECT * FROM Telephone";

rs = stmt.executeQuery(sql);

while(rs.next()){

CustomerVO c = new CustomerVO();

c.setGubun(rs.getInt("gubun"));

c.setTelnum(rs.getString("telnum"));

c.setIrum(rs.getString("irum"));

c.setGibon(rs.getInt("gibon"));

c.setFee(rs.getInt("fee"));

c.setTax(rs.getInt("tax"));

c.setTotal(rs.getInt("total"));

vector.addElement(c);

}

rs.close();

stmt.close();

} catch (SQLException e) {

e.printStackTrace();

}

return vector;

}

public static void insert(Connection conn, CustomerVO c){

Statement stmt = null;

try {

stmt = conn.createStatement();

StringBuffer sb = new StringBuffer("INSERT INTO Telephone ");

sb.append("VALUES('" + c.getTelnum() + "'," + c.getGubun());

sb.append(",'" + c.getIrum() + "'," + c.getHowmany());

sb.append("," + c.getGibon() + "," + c.getFee() + "," + c.getTax());

sb.append("," + c.getTotal() + ")");

//System.out.println(sb.toString());

stmt.executeUpdate(sb.toString());

stmt.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

}

import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

public class DBClose {

public static void close(Connection conn){

try{

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

public static void close(Connection conn, Statement stmt){

try{

if(stmt != null) stmt.close();

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

public static void close(Connection conn, Statement stmt, ResultSet rs){

try{

if(rs != null) rs.close();

if(stmt != null) stmt.close();

if(conn != null) conn.close();

}catch(SQLException ex){

ex.printStackTrace();

}

}

}

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.sql.Connection;

import java.util.Properties;

public class DBConnection{

private Properties info = null;

private Connection conn = null;

public DBConnection(){

info = new Properties();

try{

info.load(new FileInputStream("D:\\Downloads\\dbinfo.properties"));

}catch(FileNotFoundException ex){ ex.printStackTrace(); 

}catch(IOException ex){ ex.printStackTrace(); }

}

public void loadDriver(){

try{

Class.forName(info.getProperty("DBDRIVER"));

}catch(ClassNotFoundException ex){

System.out.println("Class Not Found");

}

}

public void setConnection(){

String url = info.getProperty("DBURL");

String user = info.getProperty("DBUSER");

String passwd = info.getProperty("DBPASSWORD");

try{

conn = java.sql.DriverManager.getConnection(url, user, passwd);

}catch(java.sql.SQLException ex){

System.out.println("Cannot Connect Access");

}

}

public Connection getConnection(){

if(this.conn != null) return this.conn;

else return null;

}

}

import java.util.Vector;

public class Output {

Output(){

Vector<CustomerVO> vector = CustomerController.select();

for(int i = 0 ; i < vector.size() ; i++){

CustomerVO c = vector.get(i);

System.out.println(c);

}

}

}

자바 네트워크 : UDP

import java.io.IOException;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetAddress;

import java.net.SocketException;

import java.text.SimpleDateFormat;

import java.util.Date;

public class UDPTimeServer {

private DatagramSocket server;

private DatagramPacket rPacket, sPacket;

private UDPTimeServer(){

try{

this.server = new DatagramSocket(9999);

System.out.println("Server is ready...");

}catch(SocketException ex){

ex.printStackTrace();

}catch(Exception ex){

ex.printStackTrace();

}

}

private void service(){

String pattern = "지금은 yyyy-MM-dd aa HH:mm:ss 입니다.";

SimpleDateFormat sdf = new SimpleDateFormat(pattern);

try{

while(true){

byte [] buffer = new byte[10];

this.rPacket = new DatagramPacket(buffer, buffer.length);  //받는 패킷

this.server.receive(rPacket);   //수신

InetAddress ia = rPacket.getAddress();  //client 주소

int port = rPacket.getPort();   //client port number

String msg = sdf.format(new Date());

this.sPacket = new DatagramPacket(msg.getBytes(), msg.getBytes().length, ia, port);

this.server.send(sPacket);   //발송

}

}catch(IOException ex){

ex.printStackTrace();

}

}

public static void main(String[] args) {

new UDPTimeServer().service();

}

}

import java.io.IOException;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetAddress;

import java.net.SocketException;

import java.net.UnknownHostException;

public class UDPTimeClient {

public static void main(String[] args) 

throws SocketException, UnknownHostException, InterruptedException,

IOException {

DatagramSocket client = new DatagramSocket();   

for(int i = 0 ; i < 10 ; i++){

DatagramPacket sPacket = new DatagramPacket("".getBytes(), "".getBytes().length, InetAddress.getByName("localhost"), 9999);  //""를 주어 아무것도 안보냄... 왜그런진 몰라...ㅠㅠ

Thread.sleep(1000);

client.send(sPacket);

byte [] buffer = new byte[512];

DatagramPacket rPacket = new DatagramPacket(buffer, buffer.length);

client.receive(rPacket);

String msg = new String(buffer, 0, rPacket.getLength());

System.out.println(msg);

}

client.close();

}

}

출력:

지금은 2014-04-03 AM 10:33:23 입니다.

지금은 2014-04-03 AM 10:33:24 입니다.

지금은 2014-04-03 AM 10:33:25 입니다.

지금은 2014-04-03 AM 10:33:26 입니다.

지금은 2014-04-03 AM 10:33:27 입니다.

지금은 2014-04-03 AM 10:33:28 입니다.

지금은 2014-04-03 AM 10:33:29 입니다.

지금은 2014-04-03 AM 10:33:30 입니다.

지금은 2014-04-03 AM 10:33:31 입니다.

지금은 2014-04-03 AM 10:33:32 입니다.

----------------------------------------------------------

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.SocketException;

public class UDPServer {

private DatagramSocket server;

private DatagramPacket rPacket, sPacket;

UDPServer(){

try{

this.server = new DatagramSocket(9999);

System.out.println("Server is ready...");

}catch(SocketException ex){

ex.printStackTrace();

}

}

private void service(){

try{

while(true){

byte [] buffer = new byte[512];

this.rPacket = new DatagramPacket(buffer, buffer.length);

this.server.receive(rPacket);

String msg = new String(buffer, 0, rPacket.getLength());

if(msg.equals("bye")) break;

System.out.println("Client 로 부터 받은 문자열 : " + msg);

this.sPacket = new DatagramPacket(

msg.getBytes(), msg.getBytes().length, 

rPacket.getAddress(), rPacket.getPort());

this.server.send(sPacket);

}

}catch(Exception ex){

ex.printStackTrace();

}finally{

System.out.println("Server is closed...");

try{

this.server.close();

}catch(Exception ex){}

}

}

public static void main(String[] args) {

new UDPServer().service();

}

}

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetAddress;

import java.net.SocketException;

import java.util.Scanner;

public class UDPClient {

private DatagramSocket client;

private DatagramPacket rPacket, sPacket;

private Scanner scan;

UDPClient() {

try{

this.client = new DatagramSocket();

this.scan = new Scanner(System.in);

System.out.println("발송준비완료");

}catch(SocketException ex){

ex.printStackTrace();

}

}

private void service(){

String line = null;

try{

while(true){

System.out.print(">> ");

line = this.scan.nextLine();

if(line == null || line.equals("bye")){

line = "bye";

break;

}

this.sPacket = new DatagramPacket(line.getBytes(), line.getBytes().length,

                       InetAddress.getByName("localhost"), 9999);

this.client.send(sPacket);  //서버로 발송

byte [] buffer = new byte[512];

this.rPacket = new DatagramPacket(buffer, buffer.length);

this.client.receive(rPacket);

String msg = new String(buffer, 0, rPacket.getLength());

System.out.println("서버로부터 들어온 문자열 : " + msg);

}

}catch(Exception ex){

ex.printStackTrace();

}finally{

try{

this.client.close();

}catch(Exception ex){}

}

}

public static void main(String[] args) {

new UDPClient().service();

}

}

출력:

java UDPClient

발송준비완료

>> 헤헷

서버로부터 들어온 문자열 : 헤헷

>> 으음..

서버로부터 들어온 문자열 : 으음..

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

NIO

Byte Buffer

import java.nio.ByteBuffer;

// position <= limit <= capacity

public class BufferDemo {

public static void main(String[] args) {

ByteBuffer bb = ByteBuffer.allocate(12);  //12바이트로 만들어줌.

System.out.println(bb);  //처음에 position은 0, limit와 capacity는 12

bb.putInt(100);  //100이 4바이트를 차지하니, 포지션 4이동.

System.out.println(bb);  

bb.putDouble(89.5);  //더블형 8바이트가 들어왓으니 포지션 12.

System.out.println(bb);  

//bb.put((byte)5);  //오류발생. 포지션이 리미트를 넘어감

bb.rewind();  //position이 처음위치 0으로이동

System.out.println(bb);    

System.out.println(bb.getInt());

System.out.println(bb);

System.out.println(bb.getDouble());

System.out.println(bb);

}

}

출력:

java.nio.HeapByteBuffer[pos=0 lim=12 cap=12]

java.nio.HeapByteBuffer[pos=4 lim=12 cap=12]

java.nio.HeapByteBuffer[pos=12 lim=12 cap=12]

java.nio.HeapByteBuffer[pos=0 lim=12 cap=12]

100

java.nio.HeapByteBuffer[pos=4 lim=12 cap=12]

89.5

java.nio.HeapByteBuffer[pos=12 lim=12 cap=12]

----------------------

import java.nio.ByteBuffer;

public class BufferDemo {

public static void main(String[] args) {

ByteBuffer bb = ByteBuffer.allocate(12);  //12바이트로 만들어줌.

System.out.println(bb);  //처음에 position은 0, limit와 capacity는 12

bb.putInt(100);  //100이 4바이트를 차지하니, 포지션 4이동.

System.out.println(bb);

bb.flip();  //psition을 0으로 옮기고, 원래 position의 값은 lim로 바꿔줌.

System.out.println(bb);

}

}

출력:

java.nio.HeapByteBuffer[pos=0 lim=12 cap=12]

java.nio.HeapByteBuffer[pos=4 lim=12 cap=12]

java.nio.HeapByteBuffer[pos=0 lim=4 cap=12]

-----------------------------------------------------------

Int Buffer

import java.nio.IntBuffer;

public class BufferDemo1 {

public static void main(String[] args) {

IntBuffer ib = IntBuffer.allocate(10);  //int형으로 10칸할당해주어서 40바이트. 한칸당4바이트.

System.out.println(ib);

ib.put(4).put(5).put(6).put(7).put(8).put(9);

System.out.println(ib);

ib.flip();  //position은 0으로, 마지막 position의 위치를 limit로.

System.out.println(ib);

while(ib.hasRemaining()){  //ib의 값이 있을 때까지

System.out.print(ib.get() + ",");

}

}

}

출력:

java.nio.HeapIntBuffer[pos=0 lim=10 cap=10]

java.nio.HeapIntBuffer[pos=6 lim=10 cap=10]

java.nio.HeapIntBuffer[pos=0 lim=6 cap=10]

4,5,6,7,8,9,

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

속도측정 - IO

import java.io.IOException;

public class Main {

public static void main(String[] args) throws IOException{

FullBuffer.start();

FullBuffer.copy("/home/mino/Downloads/staruml.exe", "/home/mino/Temp/staruml.exe" );

FullBuffer.end();

long differ = FullBuffer.during();

System.out.println(differ + " ms");

}

}

위에 메인에서만 FullBuffer를 SmallBuffer, NonBuffer로 바꿔주어 실행해 보면 아래의 결과값.

버퍼링을 하지 않을때

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

public class NonBuffer {

private static long start;

private static long end;

public static void start()  { start = System.currentTimeMillis(); }

public static void end()  { end = System.currentTimeMillis();  }

public static long during() { return end - start; }

public static void copy(String source, String target) throws IOException {

FileInputStream fis = new FileInputStream(source);

FileOutputStream fos = new FileOutputStream(target);

int su = 0 ;

while((su = fis.read()) != -1){

fos.write(su);

}

System.out.println("Copy End...");

}

}

출력:

Copy End...

42508 ms

버퍼링을 살짝 할때

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

public class SmallBuffer {

private static long start;

private static long end;

public static void start()  { start = System.currentTimeMillis(); }

public static void end()  { end = System.currentTimeMillis();  }

public static long during() { return end - start; }

public static void copy(String source, String target) throws IOException {

FileInputStream fis = new FileInputStream(source);

FileOutputStream fos = new FileOutputStream(target);

int count = 0;

byte [] buffer = new byte[1024];

while((count = fis.read(buffer)) != -1){

fos.write(buffer, 0, count);

}

System.out.println("Copy End...");

}

}

출력:

Copy End...

88 ms

버퍼링을 완전 쓸때

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

public class FullBuffer {

private static long start;

private static long end;

public static void start()  { start = System.currentTimeMillis(); }

public static void end()  { end = System.currentTimeMillis();  }

public static long during() { return end - start; }

public static void copy(String source, String target) throws IOException {

FileInputStream fis = new FileInputStream(source);

FileOutputStream fos = new FileOutputStream(target);

int count = 0;

byte [] buffer = new byte[fis.available()];

while((count = fis.read(buffer)) != -1){

fos.write(buffer, 0, count);

}

System.out.println("Copy End...");

}

}

출력:

Copy End...

57 ms

NIO로 했을때 

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.nio.MappedByteBuffer;

import java.nio.channels.FileChannel;

import java.nio.channels.FileChannel.MapMode;

public class FileChannelDemo {

private static long start;

private static long end;

public static void start()  { start = System.currentTimeMillis(); }

public static void end()  { end = System.currentTimeMillis();  }

public static long during() { return end - start; }

public static void copy(String source, String target) throws IOException {

FileInputStream fis = new FileInputStream(source);

FileOutputStream fos = new FileOutputStream(target);

FileChannel in = fis.getChannel();

FileChannel out = fos.getChannel();

MappedByteBuffer map = in.map(MapMode.READ_ONLY, 0, in.size()); //처음부터 파일채널의 사이즈만큼 읽어서

out.write(map);

System.out.println("Copy End...");

}

}

출력:

Copy End...

82 ms

in을 기준으로 transferTo를 써서 

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.nio.MappedByteBuffer;

import java.nio.channels.FileChannel;

import java.nio.channels.FileChannel.MapMode;

public class FileChannelDemo1 {

private static long start;

private static long end;

public static void start()  { start = System.currentTimeMillis(); }

public static void end()  { end = System.currentTimeMillis();  }

public static long during() { return end - start; }

public static void copy(String source, String target) throws IOException {

FileInputStream fis = new FileInputStream(source);

FileOutputStream fos = new FileOutputStream(target);

FileChannel in = fis.getChannel();

FileChannel out = fos.getChannel();

in.transferTo(0, in.size(), out);  //0~사이즈만큼 out 채널로 보냄.

System.out.println("Copy End...");

}

}

출력:

Copy End...

18 ms

output을 기준으로 transferFrom 사용

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.nio.channels.FileChannel;

public class FileChannelDemo2 {

private static long start;

private static long end;

public static void start()  { start = System.currentTimeMillis(); }

public static void end()  { end = System.currentTimeMillis();  }

public static long during() { return end - start; }

public static void copy(String source, String target) throws IOException {

FileInputStream fis = new FileInputStream(source);

FileOutputStream fos = new FileOutputStream(target);

FileChannel in = fis.getChannel();

FileChannel out = fos.getChannel();

out.transferFrom(in, 0, in.size());

System.out.println("Copy End...");

}

}

출력:

Copy End...

23 ms

//transferFrom을 쓰면 가장빠르다는데.. 왜 난 transferTo가 더빠르지..?

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

===================================================================

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

                JDBC      

미리준비한 offic txt와 img파일을 vm윈도우로 옮겨줌.

데몬으로 설치해주고. Customize 선택해서 access 체크된것만 확인. 그리고 인스톨.

우편번호 다운. http://www.epost114.co.kr/ . 우편번호 다운로드 클릭.

우정사업본부 고시 우편번호 DB (현재 사용되고 있는 전체 우편번호 DB임) 다운로드.

실행하면 풀리면서 c:에 우편번호파일 폴더가 생김.

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

ODBC 설정. Control Panel\All Control Panel Items\Administrative Tools\ODBC Data Sources 들어가서

System DSN 탭에서 Add눌러서 .mdb or .accdb 택하고 확인. data source name에 이름(난 access) 써주고(ODBC 이름), 데이터베이스 선택 을 눌러서 사용할 액세스파일을 지정해줌. 확인 확인

아이디와 암호를 줄것이라면system DSN에서 아까만든 access를 configure 누른 후 오른쪽 advanced 누르면 아이디 비번을 정해줄 수 있다. 아디scott, 비번tiger  해줌.

그리고 이클립스에서 window- other perspective 에서 sql Explorer 선택.

new-connection profile에서 name은 아무거나, Driver는 jdbc odbc bridget 해주고 URL : jdbc:odbc:access(access는 아까정한 odbc이름). User는 아무거나.

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

우편번호 검색

// 1. import하자

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.Scanner;

public class JDBCDemo {

private static final String DRIVER = "sun.jdbc.odbc.JdbcOdbcDriver";

private static final String URL = "jdbc:odbc:access";  //ODBC name

public static void main(String[] args) {

//2. Driver Loading

try{

Class.forName(DRIVER);

System.out.println("Driver loading Success");

}catch(ClassNotFoundException ex){

System.out.println("Class Not Found");

}

//3. Database Connection

Connection conn = null;

try{

conn = DriverManager.getConnection(URL);  //원래 아이디 비번도 같이 써줘야 하는데 우린 설정을 안해서 안넣음.

System.out.println("Connection Success");

}catch(SQLException ex){

System.out.println("Connect failure");

}

//4. Statement 객체 생성

Statement stmt = null;

ResultSet rs = null;  //결과를 가져올 때 사용

Scanner scan = new Scanner(System.in);

System.out.print("찾고자 하시는 동/읍/면 이름 : ");

String dongName = scan.nextLine().trim();

try{

stmt = conn.createStatement();

//5. Query 실행

String sql = "SELECT zipcode, sido, gugun, dong ";  //마지막 dong뒤에는 띄어야함.

sql += "FROM zipcode WHERE dong LIKE '%" + dongName + "%'";  //문자열이 데이터베이스는 '', 자바는"

rs = stmt.executeQuery(sql);  //결과값을 resultset에 넣어줌.

//6. Query 결과 수행

while(rs.next()){

String zipcode = rs.getString(1);  //JDBC는 인덱스가 1부터 시작.

String sido = rs.getString("sido");  //몇번짼지모르면 이름으로 불러와도됨.

String gugun = rs.getString("gugun");

String dong = rs.getString("dong");

System.out.printf("(%s) %s %s %s\n", zipcode, sido, gugun, dong);

}

rs.close();

stmt.close();

}catch(SQLException ex){

ex.printStackTrace();

}

//7.DB Close

try{  //닫는건 거꾸로

if(rs != null) conn.close();

}catch(SQLException ex){}

}

}

centos 설치(오늘은 다운만)

www.centos.org 접속. get centos linux now 선택. download now 선택. 

http://ftp.daum.net/centos/6.5/isos/x86_64/CentOS-6.5-x86_64-bin-DVD1.iso  선택(빠른 것 아무거나 받아도됭)

import java.net.MalformedURLException;

import java.net.URL;

import java.util.Scanner;

//1. MalformedURLException를 이용해서 URL Parsing

public class URLDemo {

public static void main(String[] args) {

URLDemo ud = new URLDemo();

String urlStr = ud.getURL();

URL url = null;

try{

url = new URL(urlStr);

System.out.println("protocol : " + url.getProtocol());

System.out.println("hostname : " + url.getHost());

System.out.println("file : " + url.getPath() + url.getFile());

System.out.println("query string : " + url.getQuery());

System.out.println("port number : " + url.getPort());

System.out.println("default port number : " + url.getDefaultPort());

}catch(MalformedURLException ex){

System.out.println(ex.getMessage());

}

}

String getURL(){

System.out.print("URL : ");

Scanner scan = new Scanner(System.in);

return scan.next().trim();

}

}

출력:

URL : http://www.naver.com/index.html : 80

protocol : http

hostname : www.naver.com

file : /index.html/index.html

query string : null

port number : -1

default port number : 80

출력:

URL : http://software.naver.com/software/summary.nhn?softwareId=MFS_100040

protocol : http

hostname : software.naver.com

file : /software/summary.nhn/software/summary.nhn?softwareId=MFS_100040

query string : softwareId=MFS_100040

port number : -1

default port number : 80

출력:

URL : file:///home/mino/Downloads/sungjuk_utf8.dat

protocol : file

hostname : 

file : /home/mino/Downloads/sungjuk_utf8.dat/home/mino/Downloads/sungjuk_utf8.dat

query string : null

port number : -1

default port number : -1

--------------------------------------------------------------

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.MalformedURLException;

import java.net.URL;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

//2. openStream() 을 이용해서 InputStream 객체 생성

public class URLDemo1 implements ActionListener {

private JFrame f;

private JTextArea area;

private JScrollPane scroll;

private JTextField tf;

private Container con;

private URLDemo1(){

this.f = new JFrame("My Browser");

this.con = this.f.getContentPane();

this.area = new JTextArea();

this.scroll = new JScrollPane(area, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,

                      JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

this.tf = new JTextField("http://", JTextField.LEFT);

this.tf.addActionListener(this);

}

private void display(){

this.f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.con.setLayout(new BorderLayout());

this.con.add("North", this.tf);

this.con.add("Center", this.scroll);

this.f.setSize(700, 500);

this.f.setVisible(true);

}

@Override

public void actionPerformed(ActionEvent evt){

URL url = null;

BufferedReader br = null;

try{

url = new URL(this.tf.getText().trim());

InputStream is = url.openStream();

br = new BufferedReader(new InputStreamReader(is));

String line = null;

while((line = br.readLine()) != null){

this.area.append(line + "\n");

}

} catch(MalformedURLException ex){

JOptionPane.showMessageDialog(this.f, ex.getMessage());

} catch(IOException ex){

JOptionPane.showMessageDialog(this.f, ex.getMessage());

} finally{

try{

br.close();

} catch(IOException ex){}

}

}

public static void main(String[] args) {

new URLDemo1().display();

}

}

출력은 텍스트필드에 www.naver.com을 치면 그 화면에 html내용을 다 읽어들인다.

----------------위 코드를 파일 출력

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.MalformedURLException;

import java.net.URL;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

//2. openStream() 을 이용해서 InputStream 객체 생성

public class URLDemo1 implements ActionListener {

private JFrame f;

private JTextArea area;

private JScrollPane scroll;

private JTextField tf;

private Container con;

private URLDemo1(){

this.f = new JFrame("My Browser");

this.con = this.f.getContentPane();

this.area = new JTextArea();

this.scroll = new JScrollPane(area, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,

                      JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

this.tf = new JTextField("http://", JTextField.LEFT);

this.tf.addActionListener(this);

}

private void display(){

this.f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.con.setLayout(new BorderLayout());

this.con.add("North", this.tf);

this.con.add("Center", this.scroll);

this.f.setSize(700, 500);

this.f.setVisible(true);

}

@Override

public void actionPerformed(ActionEvent evt){

URL url = null;

BufferedReader br = null;

PrintWriter pw = null;

try{

url = new URL(this.tf.getText().trim());

InputStream is = url.openStream();

br = new BufferedReader(new InputStreamReader(is));

String hostname = url.getHost();   //www.naver.com

hostname = hostname.substring(4, hostname.lastIndexOf("."));

pw = new PrintWriter(new BufferedWriter(new FileWriter(new File(hostname + ".txt"))));

String line = null;

while((line = br.readLine()) != null){

this.area.append(line + "\n");

pw.println(line);

pw.flush();

}

JOptionPane.showMessageDialog(this.f, "잘 저장됐습니다.");

} catch(MalformedURLException ex){

JOptionPane.showMessageDialog(this.f, ex.getMessage());

} catch(IOException ex){

JOptionPane.showMessageDialog(this.f, ex.getMessage());

} finally{

try{

br.close();  pw.close();

} catch(IOException ex){}

}

}

public static void main(String[] args) {

new URLDemo1().display();

}

}

//출력은 www.naver.com 을 치면 naver.txt로 저장됨. 

----------------------------------------------------

import java.io.IOException;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Scanner;

import java.util.Set;

//3. URL 의 openConnection() 을 이용해서 URLConnection 객체 생성

public class URLConnectionDemo {

public static void main(String[] args) {

String urlStr = new URLConnectionDemo().getURL();

URL url = null;

URLConnection conn = null;

try{

url = new URL(urlStr);

conn = url.openConnection();

Map<String, List<String>> map = conn.getHeaderFields();

Set<String> set = map.keySet();

Iterator<String> iters = set.iterator();

while(iters.hasNext()){

String key = iters.next();

System.out.print(key +" --> ");

List<String> list = map.get(key);

for(int i = 0 ; i < list.size() ; i++){

System.out.print(list.get(i) +", ");

}

System.out.println();

}

}catch(MalformedURLException ex){

}catch(IOException ex){}

}

String getURL(){

System.out.print("URL : ");

Scanner scan = new Scanner(System.in);

return scan.next().trim();

}

}

출력:

URL : http://www.naver.com

null --> HTTP/1.1 200 OK, 

Vary --> Accept-Encoding,User-Agent, 

Transfer-Encoding --> chunked, 

Date --> Wed, 02 Apr 2014 01:39:17 GMT, 

P3P --> CP="CAO DSP CURa ADMa TAIa PSAa OUR LAW STP PHY ONL UNI PUR FIN COM NAV INT DEM STA PRE", 

Connection --> close, 

Content-Type --> text/html; charset=UTF-8, 

Server --> nginx, 

Pragma --> no-cache, 

Cache-Control --> no-cache, no-store, must-revalidate, 

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

URL Encoder

import java.io.UnsupportedEncodingException;

import java.net.URLEncoder;

import java.util.Scanner;

public class URLEncoderDemo {

public static void main(String[] args) throws UnsupportedEncodingException {

String str = new URLEncoderDemo().getString();

String en = URLEncoder.encode(str, "KSC5601");

System.out.printf("%s --> %s\n", str, en);

}

String getString(){

System.out.print("Encoding 할 문자열 : ");

Scanner scan = new Scanner(System.in);

return scan.next().trim();

}

}

출력:

Encoding 할 문자열 : 안녕하세요

안녕하세요 --> %BE%C8%B3%E7%C7%CF%BC%BC%BF%E4

-----------------------------------------

URL Decoder

import java.io.UnsupportedEncodingException;

import java.net.URLDecoder;

import java.util.Scanner;

public class URLDecoderDemo {

public static void main(String[] args) throws UnsupportedEncodingException {

String str = new URLDecoderDemo().getString();

String de = URLDecoder.decode(str, "KSC5601");

System.out.printf("%s --> %s\n", str, de);

}

String getString(){

System.out.print("Decoding 할 문자열 : ");

Scanner scan = new Scanner(System.in);

return scan.next().trim();

}

}

출력:

Decoding 할 문자열 : %BE%C8%B3%E7%C7%CF%BC%BC%BF%E4

%BE%C8%B3%E7%C7%CF%BC%BC%BF%E4 --> 안녕하세요

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

TCP

Server

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.ServerSocket;

import java.net.Socket;

public class TcpDemo {

private ServerSocket server;

private Socket client;

private TcpDemo(){

this.server = null;

try{

this.server = new ServerSocket(8080);

System.out.println("Server is just started...");

}catch(IOException ex){

System.out.println(ex.getMessage());

}

}

private void service(){

BufferedReader br = null;

try{

this.client = this.server.accept();

System.out.println("[" + this.client.getInetAddress().getHostAddress() + "] 접속성공");

InputStream is = this.client.getInputStream();

String line = null;

br = new BufferedReader(new InputStreamReader(is));

while((line = br.readLine()) != null){

System.out.println(line);

}

}catch(IOException ex){

System.out.println(ex.getMessage());

}finally{

try{

this.client.close();

br.close();

}catch(IOException ex){}

}

}

public static void main(String[] args) {

new TcpDemo().service();

}

}

//쓰레드를 안만들어서 동시성이없다. 쓰레드를 만들어야함.

출력: 웹페이지에서 http://localhost:8080 입력. or http://Ubuntu-22:8080 (Ubuntu-22는 내 컴퓨터이름)

Server is just started...

[127.0.0.1] 접속성공

GET / HTTP/1.1

Host: ubuntu-22:8080

Connection: keep-alive

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8

User-Agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36

Accept-Encoding: gzip,deflate,sdch

Accept-Language: en-US,en;q=0.8

출력: 웹페이지에서 http://localhost:8080/abc/def/ghi.test.html  입력.

Server is just started...

[127.0.0.1] 접속성공

GET /abc/def/ghi.test.html HTTP/1.1

Host: localhost:8080

Connection: keep-alive

Cache-Control: max-age=0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8

User-Agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36

Accept-Encoding: gzip,deflate,sdch

Accept-Language: en-US,en;q=0.8

//접속해서 들어온 클라이언트의 정보를 알 수 있다. 크롬으로 접속했으며등등~~

--------------------------------내보낼때

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

public class TcpDemo {

private ServerSocket server;

private Socket client;

private TcpDemo(){

this.server = null;

try{

this.server = new ServerSocket(8080);

System.out.println("Server is just started...");

}catch(IOException ex){

System.out.println(ex.getMessage());

}

}

private void service(){

BufferedReader br = null;

PrintWriter pw = null;

try{

this.client = this.server.accept();

System.out.println("[" + this.client.getInetAddress().getHostAddress() + "] 접속성공");

InputStream is = this.client.getInputStream();

String line = null;

br = new BufferedReader(new InputStreamReader(is));

line = br.readLine(); //GET /index.html HTTP/1.1

int start = line.indexOf(" "); //3

int last = line.lastIndexOf("HTTP"); //16

line = line.substring(start +2, last);  //index.html 만 뽑기 위해서

String filename = null;

if(line.length() == 1) filename = "index.html";

else filename = line;

//System.out.println(filename);

OutputStream os = this.client.getOutputStream();  //client로 전송할 객체

File file = new File(filename);

pw = new PrintWriter(new OutputStreamWriter(os));

br = null;

br = new BufferedReader(new FileReader(file));

line = null;

while((line = br.readLine()) != null){  //index.html파일로부터 읽기

pw.println(line);

pw.flush();

}

while(line = p)

}catch(IOException ex){

System.out.println(ex.getMessage());

}finally{

try{

this.client.close();

br.close();

pw.close();

}catch(IOException ex){}

}

}

public static void main(String[] args) {

new TcpDemo().service();

}

}

그리고 다른컴퓨터에서 html파일로 아래와 같이 만들어서 이름을 index.html 로 주고 tcp.class와 같은 폴더에 저장한다.

<html>

 <head>

  <meta charset="UTF-8">

  <title>Welcome! my hompage...</title>

 </head>

 <body bgcolor='yellow'>

    <font size='7' color='red'><b>Hello, World</font>

 </body>

</html>

실행시키면 노랑바탕에 빨강 글씨로 나온다. 

그리고 서버를 열고.....

이제 내컴퓨터에서 웹페이지에서 접속할 아이피:8080 을 쓰면 index.html 페이지가 열린다

---------------------------------------------------------------

쓰레드까지 추가. 그러면 여러번 한번접속후 종료하지않고 계속 받을 수 있음.

import java.io.BufferedReader;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

public class Apache {

private ServerSocket server;

private Socket client;

Apache(){

try{

this.server = new ServerSocket(8081);

System.out.println("Server is ready...");

while(true){

this.client = this.server.accept();

ClientThread ct = new ClientThread(this.client);

ct.start();

}

}catch(Exception ex){

System.out.println(ex.getMessage());

}

}

public static void main(String[] args) {

new Apache();

}

}

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileReader;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java.net.Socket;

public class ClientThread extends Thread {

private Socket client;

private BufferedReader br;

private PrintWriter pw;

ClientThread(Socket client){

this.client = client;

try {

InputStream is = this.client.getInputStream();

OutputStream os = this.client.getOutputStream();

this.br = new BufferedReader(new InputStreamReader(is));

this.pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(os)));

} catch (Exception e) {

System.out.println(e.toString());

} 

}

@Override

public void run(){

//Thread 가 해야할 일

try{

String line = this.br.readLine();   //GET /index.html HTTP/1.1

int start = line.indexOf(" ");  //3

int last = line.lastIndexOf("HTTP");  //16

line = line.substring(start + 2, last);   //index.html

String filename = null;

if(line.length() == 1)  filename = "index.html";

else filename = line;

//파일을 읽을 BufferedReader

BufferedReader brTemp = 

new BufferedReader(new FileReader(new File(filename)));

line = null;

while((line = brTemp.readLine()) != null){  //파일로 부터 한 줄씩 읽어서

this.pw.println(line);

this.pw.flush();

}

brTemp.close();

}catch(Exception ex){

ex.printStackTrace();

}finally{

try{

if(this.br != null) this.br.close();

if(this.pw != null) this.pw.close();

}catch (Exception e) {

e.printStackTrace();

}

}

}

}

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

TCP 서버 클라이언트 : 잘 전송되는지 확인.

import java.io.BufferedReader;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

public class TcpServer {

private ServerSocket server;

private Socket client;

private BufferedReader br;

private PrintWriter pw;

private TcpServer(){

try{

this.server = new ServerSocket(8888);

System.out.println("Server is ready...");

}catch(Exception ex){

ex.printStackTrace();

}

}

private void service(){

try{

while(true){

this.client = this.server.accept();

System.out.println(

"[" + this.client.getInetAddress().getHostAddress() + "] 님이 연결됐습니다." );

TcpThread tt = new TcpThread(this.client);

tt.start();

}

}catch(Exception ex){

ex.printStackTrace();

}finally{

System.out.println("Server is closed...");

try{

this.server.close();

}catch(Exception ex){

ex.printStackTrace();

}

}

}

public static void main(String[] args) {

new TcpServer().service();

}

}

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java.net.Socket;

public class TcpThread extends Thread{

private Socket client;

private BufferedReader br;

private PrintWriter pw;

TcpThread(Socket client){

this.client = client;

try{

this.br = new BufferedReader(

new InputStreamReader(this.client.getInputStream()));

this.pw = new PrintWriter(

new BufferedWriter(

new OutputStreamWriter(this.client.getOutputStream())));

}catch(Exception ex){

ex.printStackTrace();

}

}

@Override

public void run(){

//Thread 가 해야할 일

try{

String line = null;

while(true){

line = this.br.readLine();

if(line.equals("quit")) break;

System.out.println("String from Client : " + line);

this.pw.println(line);

this.pw.flush();

}

}catch(Exception ex){

ex.printStackTrace();

}finally{

try{

this.br.close();

this.pw.close();

}catch(Exception ex){

ex.printStackTrace();

}

}

}

}

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java.net.Socket;

import java.util.Scanner;

public class TcpClient {

private Socket socket;

private Scanner scan;

private String ip;

private int port;

private BufferedReader br;

private PrintWriter pw;

TcpClient(){

try{

this.scan = new Scanner(System.in);

this.getServerInfo();

this.socket = new Socket(ip, port);

System.out.println("[" + this.ip + "] connected...");

this.br = new BufferedReader(

new InputStreamReader(this.socket.getInputStream()));

this.pw = new PrintWriter(

new BufferedWriter(

new OutputStreamWriter(this.socket.getOutputStream())));

}catch(Exception ex){

ex.printStackTrace();

}

}

private void service(){

try{

String line = null;

while(true){

System.out.print("서버에 보낼 문자열 : ");

line = this.scan.nextLine().trim();

if(line == null || line.equals("quit")) {

this.pw.println("quit");

this.pw.flush();

break;

}

this.pw.println(line);

this.pw.flush();    //서버로 발송

System.out.println("서버로 부터 들어온 문자열 : " + this.br.readLine());

//서버에서 들어온 문자열

}

}catch(Exception ex){

ex.printStackTrace();

}finally{

try{

this.br.close();

this.pw.close();

}catch(Exception ex){

ex.printStackTrace();

}

}

}

public static void main(String[] args) {

TcpClient tc = new TcpClient();

tc.service();

}

void getServerInfo(){

System.out.print("Server IP : ");     this.ip = this.scan.nextLine();

System.out.print("Server Port Number : ");   this.port = this.scan.nextInt();

this.scan.nextLine(); //enter key 날리자.

}

}

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

채팅

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.Hashtable;

public class ChatServer {

private ServerSocket server;

private Socket client;

ChatServer(){   //constructor

try{

this.server = new ServerSocket(9999);

System.out.println("Chatting Server is ready...");

Hashtable<String, PrintWriter> ht = new Hashtable<String, PrintWriter>();

while(true){

this.client = this.server.accept();

ChatServerThread cst = new ChatServerThread(this.client, ht);

cst.start();

}

}catch(Exception ex){

ex.printStackTrace();

}

}

public static void main(String[] args) {

new ChatServer();

}

}

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java.net.Socket;

import java.util.Collection;

import java.util.Hashtable;

import java.util.Iterator;

public class ChatServerThread extends Thread {

private Socket client;

private Hashtable<String, PrintWriter> ht;

private String id;  //대화명

private BufferedReader br;

private PrintWriter pw;

public ChatServerThread(Socket client, Hashtable<String, PrintWriter> ht) {

this.client = client;

this.ht = ht;

try{

this.br = new BufferedReader(

new InputStreamReader(this.client.getInputStream()));

this.pw = new PrintWriter(

new BufferedWriter(new OutputStreamWriter(

this.client.getOutputStream())));

this.id = br.readLine();   //사용자의 아이디

synchronized(this.ht){

System.out.println("[" + this.id + "]님이 입장하셨습니다.");

this.ht.put(this.id, this.pw);

this.broadcast("[" + this.id + "]님이 입장하셨습니다.");

}

}catch(Exception ex){

ex.printStackTrace();

}

}

@Override

public void run(){

//Thread 가 해야할 일

try{

String line = null;

while((line = this.br.readLine()) != null){

if(line.equals("quit")) break;

this.broadcast("[" + this.id +"]" + line);

}

}catch(Exception ex){

ex.printStackTrace();

}finally{

synchronized(this.ht){

this.ht.remove(this.id);

}

this.broadcast("[" + this.id + "] 님이 퇴장하셨습니다.");

try{

if(this.br != null) this.br.close();

if(this.pw != null) this.pw.close();

if(this.client != null) this.client.close();

}catch(Exception ex){

ex.printStackTrace();

}

}

}

private void broadcast(String msg){

synchronized(this.ht){

Collection<PrintWriter> members = this.ht.values();

Iterator<PrintWriter> iters = members.iterator();

while(iters.hasNext()){

PrintWriter pw1 = iters.next();

pw1.println(msg);

pw1.flush();

}

}

}

}

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java.net.Socket;

import java.util.Scanner;

public class ChatClient {

private Socket client;

private String id;

private String ip;

private int port;

private Scanner scan;

private BufferedReader br;

private PrintWriter pw;

ChatClient(){

this.scan = new Scanner(System.in);

getServerInfo();

try{

this.client = new Socket(this.ip, this.port);

this.br = new BufferedReader(

new InputStreamReader(this.client.getInputStream()));

this.pw = new PrintWriter(

new BufferedWriter(new OutputStreamWriter(

this.client.getOutputStream())));

this.pw.println(this.id);  //서버에접속하면 가장먼저 아이디를 읽으므로, 클라이언트에서는 제일 먼저 아이디를 보내줘야 한다.

this.pw.flush();

ChatClientThread cct = new ChatClientThread(this.client, this.br); //서버로 부터 문자열을 받을 객체

cct.start();

}catch(Exception ex){

ex.printStackTrace();

}

}

private void getServerInfo(){

System.out.print("대화명 : ");     this.id = this.scan.nextLine();

System.out.print("서버IP : ");     this.ip = this.scan.nextLine();

System.out.print("서버 Port Number : ");  this.port = this.scan.nextInt();

this.scan.nextLine();   //마지막 엔터키 처리

}

private void service(){   //채팅서버로 문자열을 보내는 메소드

while(true){

System.out.print("[" + this.id + "] >> ");

String line = this.scan.nextLine();

if(line == null || line.equals("quit")){

this.pw.println("quit");  //서버에도 quit라고 보내고

this.pw.flush();

break;

}

this.pw.println(line);   this.pw.flush();

}

}

public static void main(String[] args) {

new ChatClient().service();

}

}

import java.awt.BorderLayout;

import java.awt.Container;

import java.io.BufferedReader;

import java.net.Socket;

import javax.swing.JFrame;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

public class ChatClientThread extends Thread {

private Socket client;

private BufferedReader br;

private JFrame f;

private JTextArea area;

private Container con;

private JScrollPane pane;

public ChatClientThread(Socket client, BufferedReader br) {

this.client = client;

this.br = br;

this.f = new JFrame("Chatting Window");

this.f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.con = this.f.getContentPane();

this.con.setLayout(new BorderLayout());

this.area = new JTextArea();

this.pane = new JScrollPane(this.area, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,

               JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

this.con.add("Center", this.pane);

this.f.setSize(700, 400);

this.f.setVisible(true);

}

@Override

public void run(){    //서버가 보내준 문자열을 받는 메소드

try{

String line = null;

while((line = this.br.readLine()) != null){

this.area.append(line + "\n");

}

}catch(Exception ex){

ex.printStackTrace();

}finally{

try{

if(this.client != null) this.client.close();

}catch(Exception ex){

ex.printStackTrace();

}

}

}

}

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

http://www.ubuntu.com/ 이동

Download-Desktop 이동. Ubuntu 13.10 64비트 버전 다운. 후 

VMware Workstation에 설치

File

import java.io.File;

public class FileDemo {

public static void main(String[] args) {

System.out.println("File.separator = " + File.separator);

System.out.println("file.separator = " + System.getProperty("file.separator"));

System.out.println("File.pathSeparator = " + File.pathSeparator);

System.out.println("path.separator = " + System.getProperty("path.separator"));

}

}

출력:

File.separator = /

file.separator = /

File.pathSeparator = :

path.separator = :

//윈도우즈는 파일구분이 \로, 리눅스는 /, 그리고 경로구분은 윈도우즈는 ; , 리눅스는 :

----------------------------------------------

import java.io.File;

import java.io.IOException;

import java.util.Scanner;

public class FileDemo1 {

public static void main(String[] args) {

FileDemo1 fd = new FileDemo1();

File file = new File(fd.getPath());

System.out.println("Path = " + file.getPath());

System.out.println("Absolute path = " + file.getAbsolutePath());

try{  //CanonicalPath는 익셉션을 던짐

System.out.println("Canonical path = " + file.getCanonicalPath());

}catch(IOException ex){}

}

String getPath(){

System.out.print("파일 경로 : ");

Scanner scan = new Scanner(System.in);

return scan.next();

}

}

출력:

파일 경로 : src/FileDemo1.java

Path = src/FileDemo1.java

Absolute path = /home/mino/JavaRoom/0401/src/FileDemo1.java

Canonical path = /home/mino/JavaRoom/0401/src/FileDemo1.java

출력:

파일 경로 : ../0401/src/FileDemo1.java

Path = ../0401/src/FileDemo1.java

Absolute path = /home/mino/JavaRoom/0401/../0401/src/FileDemo1.java

Canonical path = /home/mino/JavaRoom/0401/src/FileDemo1.java

//getPath는 내가 입력한 경로. 진짜 절대경로는 CanonicalPath. AbsolutePath를 쓰는것이 일반적이지만 cannicalPath는 익셉션처리를 해주어야함.

//AbsolutePath를 두번째처럼 쓰는 경우는 거의 없기 때문에 일반적으로 AbsolutePath를 써도 괜찮다.

--------------------------------------------

import java.io.File;

import java.util.Date;

import java.util.Scanner;

public class FileDemo2 {

public static void main(String[] args) {

File file = new File(new FileDemo2().getPath());

if(file.exists()){

System.out.println("Name : " + file.getName());

System.out.println("Absolute : " + file.getAbsolutePath());

System.out.println("Permission : " + file.canRead());

System.out.println("Permission : " + file.canWrite());

System.out.println("Permission : " + file.canExecute());

System.out.println("file or directory : " + file.isDirectory());

System.out.println("Created Date : " + file.lastModified());

System.out.println("Created Date : " + new Date(file.lastModified()));

System.out.println("Size : " + file.length());

}else{

System.out.println("파일 혹은 디렉토리를 찾을 수 없습니다");

}

}

String getPath(){

System.out.print("파일 및 디렉토리 경로 : ");

Scanner scan = new Scanner(System.in);

return scan.next();

}

}

출력:

파일 및 디렉토리 경로 : src/FileDemo2.java

Name : FileDemo2.java

Absolute : /home/mino/JavaRoom/0401/src/FileDemo2.java

Permission : true

Permission : true

Permission : false

file or directory : false

Created Date : 1396315823000

Created Date : Tue Apr 01 10:30:23 KST 2014

Size : 994

출력:

파일 및 디렉토리 경로 : /home/mino/JavaRoom

Name : JavaRoom

Absolute : /home/mino/JavaRoom

Permission : true

Permission : true

Permission : true

file or directory : true

Created Date : 1396313223000

Created Date : Tue Apr 01 09:47:03 KST 2014

Size : 4096

-----------------------------------------------------------

파일 이름변경

import java.io.File;

import java.util.Scanner;

public class FileDemo3 {

public static void main(String[] args) {

FileDemo3 fd = new FileDemo3();

File file = new File(fd.getPath());

if(file.exists()){

String newName = fd.getPath();

System.out.println(file.renameTo(new File(newName)));

}else System.out.println("Not Found");

}

String getPath(){

System.out.print("파일명 : ");

Scanner scan = new Scanner(System.in);

return scan.next();

}

}

출력:

파일명 : /home/mino/sungjuk_utf8.dat

파일명 : /home/mino/sungjuk.dat

true

//처음에 이름을 변경할 파일을 입력하고, 두번째는 이름을 어떻게 바꿀건지 한다. 성공하면 true

-------------------------------------------------------

파일 삭제

import java.io.File;

import java.util.Scanner;

public class FileDemo3 {

public static void main(String[] args) {

FileDemo3 fd = new FileDemo3();

File file = new File(fd.getPath());

if(file.exists()){

System.out.println(file.delete());

}else System.out.println("Not Found");

}

String getPath(){

System.out.print("파일명 : ");

Scanner scan = new Scanner(System.in);

return scan.next();

}

}

출력:

파일명 : /home/mino/sungjuk.dat

true

//파일이 삭제된다.

------------------------------------------------------------

목록

import java.io.File;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Scanner;

public class FileDemo4 {

public static void main(String[] args) {

File file = new File(new FileDemo4().getPath());

if(file.exists()){

if(file.isDirectory()){

File [] array = file.listFiles();  //디렉토리의 모든 파일을 파일 배열에 넣어줌.

for(File f : array){

System.out.print(f.getName() +"  \t\t");

String pattern = "MM월 dd   HH:mm";

SimpleDateFormat sdf = new SimpleDateFormat(pattern);

System.out.print(sdf.format(new Date(f.lastModified())) +"\t\t");

if(f.isDirectory()) System.out.println("<DIR>");

else System.out.println(f.length() + " Bytes");

}

}else System.out.println("디렉토리가 아닙니다.");

}else System.out.println("Not Found");

}

String getPath(){

System.out.print("디렉토리 경로 : ");

Scanner scan = new Scanner(System.in);

return scan.next();

}

}

출력:

디렉토리 경로 : src

FileDemo3.java   04월 01   10:40 508 Bytes

FileDemo1.java   04월 01   10:03 606 Bytes

FileDemo.java   04월 01   09:59 384 Bytes

FileDemo4.java   04월 01   10:54 970 Bytes

FileDemo2.java   04월 01   10:30 994 Bytes

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.Font;

import javax.swing.JFrame;

import javax.swing.JTree;

import javax.swing.tree.DefaultMutableTreeNode;

import javax.swing.tree.DefaultTreeModel;

public class JTreeDemo {

private JFrame f;

private Container con;

private JTree tree;

private Font font;

private JTreeDemo(){

this.f = new JFrame("JTree Demo");

this.f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.font = new Font("Monospaced", Font.PLAIN, 15);

this.con = this.f.getContentPane();

this.tree = new JTree();

}

private void display(){

this.con.setLayout(new BorderLayout());

this.tree.setFont(this.font);

this.tree.setModel(getModel());

this.con.add("Center", this.tree);

this.f.setSize(300, 800);

this.f.setLocationRelativeTo(null);

this.f.setVisible(true);

}

private DefaultTreeModel getModel(){

DefaultMutableTreeNode root = new DefaultMutableTreeNode("Java-Oracle");

DefaultMutableTreeNode os = new DefaultMutableTreeNode("OS");

DefaultMutableTreeNode windows = new DefaultMutableTreeNode("Windows8.1");

DefaultMutableTreeNode ubuntu = new DefaultMutableTreeNode("Ubuntu");

DefaultMutableTreeNode centos = new DefaultMutableTreeNode("CentOS");

os.add(windows);  os.add(ubuntu);  os.add(centos);

DefaultMutableTreeNode language = new DefaultMutableTreeNode("language");

DefaultMutableTreeNode c = new DefaultMutableTreeNode("C-language");

DefaultMutableTreeNode java = new DefaultMutableTreeNode("Java");

language.add(c);   language.add(java);

DefaultMutableTreeNode db = new DefaultMutableTreeNode("DB");

DefaultMutableTreeNode derby = new DefaultMutableTreeNode("Derby");

DefaultMutableTreeNode sqlite = new DefaultMutableTreeNode("Sqlite");

DefaultMutableTreeNode mysql = new DefaultMutableTreeNode("MySQL");

DefaultMutableTreeNode oracle = new DefaultMutableTreeNode("Oracle");

db.add(derby);  db.add(sqlite);  db.add(mysql);    db.add(oracle);

DefaultMutableTreeNode web = new DefaultMutableTreeNode("Web");

DefaultMutableTreeNode html5 = new DefaultMutableTreeNode("HTML5");

DefaultMutableTreeNode css3 = new DefaultMutableTreeNode("CSS3");

DefaultMutableTreeNode javascript = new DefaultMutableTreeNode("JavaScript");

DefaultMutableTreeNode ajax = new DefaultMutableTreeNode("Ajax");

DefaultMutableTreeNode xml = new DefaultMutableTreeNode("XML");

DefaultMutableTreeNode jquery = new DefaultMutableTreeNode("jQuery");

web.add(html5);  web.add(css3);   web.add(javascript);   web.add(ajax);

web.add(xml);   web.add(jquery);

DefaultMutableTreeNode framework = new DefaultMutableTreeNode("Framework");

DefaultMutableTreeNode struts = new DefaultMutableTreeNode("Struts");

DefaultMutableTreeNode spring = new DefaultMutableTreeNode("Spring");

framework.add(struts);  framework.add(spring);

DefaultMutableTreeNode project = new DefaultMutableTreeNode("Project");

DefaultMutableTreeNode first = new DefaultMutableTreeNode("1차 프로젝트");

DefaultMutableTreeNode second = new DefaultMutableTreeNode("2차 프로젝트");

DefaultMutableTreeNode third = new DefaultMutableTreeNode("3차 프로젝트");

project.add(first);  project.add(second);   project.add(third);

root.add(os);   root.add(language);   root.add(db);  root.add(web);

root.add(framework);   root.add(project);

DefaultTreeModel dtm = new DefaultTreeModel(root);

return dtm;

}

public static void main(String[] args) {

new JTreeDemo().display();

}

}

//출력은 "Java-Oracle"가 루트폴더, 그리고 아래 파일들이 정렬. 다같이 만들어줫으나 파일을 붙여주면 그것은 폴더처럼됨. 

펼치면 담겨있는 것을 볼 수 잇음.

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

탐색기

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.Dimension;

import java.awt.Toolkit;

import javax.swing.JFrame;

import javax.swing.JSplitPane;

import javax.swing.JTable;

import javax.swing.JTextArea;

import javax.swing.UIManager;

public class Explorer {

private JFrame f;

private JSplitPane pane;

private Container con;

private LeftPane  left;

private JTable table;

private JTextArea ta;

private RightPane  right;

private Explorer(){

this.f = new JFrame("File Manager");

this.con = this.f.getContentPane();

this.pane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, true);

this.right = new RightPane();

this.left = new LeftPane(this.right);

}

private void display(){

this.f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.pane.setLeftComponent(this.left);

this.pane.setRightComponent(this.right);

this.con.setLayout(new BorderLayout());

this.con.add("Center", this.pane);

this.f.setLocationRelativeTo(null);

Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();

this.f.setSize((int)dim.getWidth(), (int)dim.getHeight());

this.f.setVisible(true);

}

public static void main(String[] args) {

//API에서 javax.swing.plaf.~~ 써져있는 것을 볼 수 있다.

//Metal : javax.swing.plaf.metal.MetalLookAndFeel

//GTK : com.su.java.swing.plat.gtk.GTKLookAndFeel    -안먹힘

//Nimbus : com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel

//Motif : com.sun.java.swing.plaf.motif.MotifLookAndFeel

//Windows : com.sun.java.swing.plaf.windows.WindowsLookAndFeel   -안먹힘

try{

UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");

}catch(Exception ex){}

new Explorer().display();

}

}

import java.awt.CardLayout;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.JTextArea;

public class RightPane extends JPanel {

private JScrollPane scrollTable, scrollTextArea;

private JTable table;

private JTextArea ta;

private CardLayout card;

RightPane(){

this.card = new CardLayout();

this.setLayout(card);

this.table = new JTable();

this.scrollTable = new JScrollPane(this.table);    //디렉토리를 선택했을 때

this.ta = new JTextArea();

this.scrollTextArea = new JScrollPane(this.ta);   //파일을 선택했을 때

this.add(this.scrollTable, "table");

this.add(this.scrollTextArea, "area");

card.show(this, "table");

this.setSize(480, 700);

}

JTable getTable(){ return this.table; }

void setTable(JTable table){ this.table = table; }

JTextArea getTextArea() { return this.ta; }

void setTextArea(JTextArea ta) { this.ta = ta; }

CardLayout getCardLayout(){  return this.card; }

}

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.io.File;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTree;

import javax.swing.tree.DefaultMutableTreeNode;

LeftPane(RightPane right){

//Linux, Unix

this.right = right;

this.root = new DefaultMutableTreeNode("내 컴퓨터");

//루트 디렉토리(드라이브명)을 출력

File [] array = File.listRoots();  //모든 루트 디렉토리를 돌려준다.

for(File f : array){

if(f.isDirectory()){  //디렉토리라면

DefaultMutableTreeNode node = new DefaultMutableTreeNode(f.getPath());

node.add(new DefaultMutableTreeNode("EMPTY"));  //각폴더에 모두 empty를 넣음. 모두 폴더화. 확장은 이벤트에 의해 해주기 위해.

this.root.add(node);

}

}

//특정 루트 디렉토리의 디렉토리만을 출력(특정 드라이브)

/*File file = new File("c:/");  

File [] array = file.listFiles();  //루트밑에있는 폴더들을 모두 파일 배열에 넣음.

for(File f : array){

if(f.isDirectory()){  //디렉토리라면

DefaultMutableTreeNode node = new DefaultMutableTreeNode(f.getName());

node.add(new DefaultMutableTreeNode("EMPTY"));  //각폴더에 모두 empty를 넣음. 모두 폴더화. 확장은 이벤트에 의해 해주기 위해.

this.root.add(node);

}

}*/

//루트디렉토리 출력을 toString을 사용하는 방법

/* File [] array = File.listRoots();    // 변경 : Root부터 디렉토리(C:\, D:\, ...)를 찾음

   for(int i = 0; i< array.length; i++){

       if(array[i].isDirectory()){  // 변경 

          DefaultMutableTreeNode node = new DefaultMutableTreeNode(array[i].toString().trim()); // 변경 : Root밑에 디렉토리(C:\, D:\, ...)를 연결함

          node.add(new DefaultMutableTreeNode("EMPTY"));

          this.root.add(node);

       }

   }*/

this.tree = new JTree(this.root);

this.tree.addTreeWillExpandListener(new TreeAction());  //트리확장할 것이다.

this.tree.addTreeSelectionListener(new TreeSelection(this, this.right));

this.scroll = new JScrollPane(this.tree, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,

                                JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

this.setLayout(new BorderLayout());

this.add("Center", this.scroll);

this.setPreferredSize(new Dimension(200,  700));

}

}

import java.io.File;

import java.util.Enumeration;

import java.util.StringTokenizer;

import javax.swing.event.TreeExpansionEvent;

import javax.swing.event.TreeWillExpandListener;

import javax.swing.tree.DefaultMutableTreeNode;

import javax.swing.tree.ExpandVetoException;

import javax.swing.tree.MutableTreeNode;

import javax.swing.tree.TreeNode;

import javax.swing.tree.TreePath;

public class TreeAction implements TreeWillExpandListener {

@Override

public void treeWillExpand(TreeExpansionEvent event)

throws ExpandVetoException {

TreePath path = event.getPath();

//System.out.println(path);    출력 -> [/, home]

StringTokenizer st = new StringTokenizer(path.toString(), "[,]");

st.nextToken();   //   /를 날려주고 뒤에 폴더이름만 가져오게 하기 위해

//System.out.println(st.nextToken());  출력 -> usr, home ~~~~

if(st.hasMoreTokens()){  //다음토큰이 있는 경우에 오류발생 방지.

String node = File.separator + st.nextToken().trim();    //     /home

//System.out.println(node);  //출력-> /tmp, /home, ~~

while(st.hasMoreTokens()){  //[1,home,계정]이니 다음이 없을 때까지

node += File.separator + st.nextToken().trim();

}

File file = new File(node); /////            /home

//System.out.println(file.getAbsolutePath());  //절대경로를 출력

File [] array = file.listFiles();

if(array == null) return;  //자식이 없으면 그냥 넘기고

DefaultMutableTreeNode temp =    //home

 (DefaultMutableTreeNode)event.getPath().getLastPathComponent();

temp.removeAllChildren();  //붙이기전에 다지움. 이걸 하지 않으면 자기자신을 택하면 또 자기자신이 나오는 현상 발생

for(File f : array){

if(f.isDirectory()){

DefaultMutableTreeNode tn = new DefaultMutableTreeNode(f.getName());

tn.add(new DefaultMutableTreeNode("EMPTY"));  //마지막 폴더를 선택했을 때 비어있다면 empty표시

temp.add(tn);

}else if(f.isFile()){

temp.add(new DefaultMutableTreeNode(f.getName()));

}

}

}

}

@Override

public void treeWillCollapse(TreeExpansionEvent event)

throws ExpandVetoException {}

}

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Vector;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.event.TreeSelectionEvent;

import javax.swing.event.TreeSelectionListener;

import javax.swing.table.DefaultTableModel;

import javax.swing.tree.DefaultMutableTreeNode;

import javax.swing.tree.TreeNode;

import javax.swing.tree.TreePath;

public class TreeSelection implements TreeSelectionListener {

private JPanel panel;

private RightPane right;

TreeSelection(JPanel panel, RightPane right){

this.panel = panel;

this.right = right;

}

@Override

public void valueChanged(TreeSelectionEvent e) {

TreePath path = e.getPath();

//System.out.println(path);    //[/, home]

DefaultMutableTreeNode node = 

(DefaultMutableTreeNode)e.getPath().getLastPathComponent();  //경로상의 제일 마지막 

//System.out.println(node);  // home, sys 처럼 앞의 경로는 두고 마지막 경로상의 값만 출력한다.

TreeNode [] array = node.getPath();

String str = "";

for(int i = 1 ; i < array.length ; i++){  //1부터 쓴 이유는 출력이 usr을 찎으면 ///usr로 시작한다. 처음에 /로 시작하고 separator붙여주고 해서 제일처음 부분을 제거한 것이다.

str += File.separator + array[i];

}

File file = new File(str);

if(file.isDirectory()){  //디렉토리를 선택했다면

File [] fileArray = file.listFiles();

Vector<String> columnVector = new Vector<String>(1,1);

columnVector.addElement("Name");

columnVector.addElement("Modifeied Date");

columnVector.addElement("Directory");

columnVector.addElement("size");

Vector<Object> dataVector = new Vector<Object>(1,1);

for(File f : fileArray){

Vector<String> imsi = new Vector<String>(1,1);

imsi.addElement(f.getName());

long date = f.lastModified();

String pattern = "YYYY-MM-dd HH:mm:ss";

SimpleDateFormat sdf = new SimpleDateFormat(pattern);

imsi.addElement(sdf.format(new Date(date)));

if(f.isDirectory()) imsi.addElement("<DIR>");

else if (f.isFile()) imsi.addElement("");

imsi.addElement(f.length() + "Bytes");

dataVector.addElement(imsi);

}

DefaultTableModel model = new DefaultTableModel(dataVector, columnVector);

this.right.getTable().setModel(model);

this.right.getCardLayout().show(this.right,"table");

}else if(file.isFile()){

BufferedReader br = null;

String line = "", line1 = "";

try{

br = new BufferedReader(new FileReader(file));

while((line = br.readLine()) != null){

line1 += line + "\n";

}

this.right.getTextArea().setText("");  //텍스트공간 초기화

this.right.getTextArea().append(line1);

this.right.getCardLayout().show(right, "area");

}catch (IOException e2){

JOptionPane.showMessageDialog(this.panel, e2.getMessage());

}finally{

try{

if(br != null) br.close();

}catch(IOException ex){}

}

}

}

}

----------------------------------------------------------

(참조)

1) 루트 디렉토리명만 출력하기(드라이브명)

File file[];

file = File.listRoots();

for(i =0 ; i<file.length ; i++)

{

    System.out.println(file[i].toString());

}

2) 특정 루트 디렉토리의 디렉토리만을 출력(특정 드라이브)

import java.io.*;

class rootDirectoryList

{

    public void list()

    {

        File root=new File("c:/");

        File file[]=root.listFiles();

        int i;

        for(i=0 ; i<file.length ; i++)

        {

            if(file[i].isDirectory())

            {

                System.out.println(file[i].toString());

            }

        }

    }

    public static void main(String args[])

    {

        rootDirectoryList l=new rootDirectoryList();

        l.list();

    }

}

출처:

http://cafe.naver.com/04itschool/299

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

직렬화

java.io.Serializable 의 자식은 직렬화가 가능.(오버라이드할 것이 하나도 없음)

preemitive 타입은 직렬화가 가능.

String, Vector, Date 는 Serializable 의 자식이므로 직렬화 가능.

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectOutputStream;

import java.util.Date;

public class SerializationDemo {

public static void main(String[] args) {

Date date = new Date();

System.out.println(date.toString());  //Tue Apr 01 16:05:46 KST 2014

ObjectOutputStream oos = null;

try{

String path = "/home/mino/Temp";

oos = new ObjectOutputStream(

new FileOutputStream(new File(path, "date.ser")));

oos.writeObject(date);

System.out.println("잘 저장됐습니다.");

}catch(IOException ex){

}finally{

try{

oos.close();

}catch(IOException ex){}

}

}

}

//만들어진 파일을 열면 제대로된 글자가 안나온다. 하지만 역직렬화를 통해 다시 불러오면 제대로보인다.

--------------------------------

역직렬화  - 직렬화한 것을 복원

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.util.Date;

public class SerializationDemo1 {

public static void main(String[] args) {

String path = "/home/mino/Temp";

ObjectInputStream ois = null;

try {

ois = new ObjectInputStream(new FileInputStream(new File(path, "date.ser")));

Object obj = ois.readObject();

if(obj instanceof Date){

Date before = (Date)obj;

System.out.println(before);

}

} catch (Exception e) {

} finally{

try {

if(ois != null) ois.close();

} catch (Exception e2) {}

}

}

}

출력:

Tue Apr 01 16:06:51 KST 2014

-------------------------------------------------------------

직렬화

public class Student implements java.io.Serializable { //이것을 implements 하지않으면 Student는 serializable하지 않기에 에러발생.

private String hakbun, name;

private int kor, eng, mat, edp;

public Student(String hakbun, String name, int kor, int eng, int mat,

int edp) {

super();

this.hakbun = hakbun;

this.name = name;

this.kor = kor;

this.eng = eng;

this.mat = mat;

this.edp = edp;

}

@Override

public String toString(){

return String.format("%-10s%10s%5d%5d%5d%5d",

             this.hakbun, this.name, this.kor, this.eng, this.mat, this.edp);

}

public String getHakbun() {

return hakbun;

}

public void setHakbun(String hakbun) {

this.hakbun = hakbun;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getKor() {

return kor;

}

public void setKor(int kor) {

this.kor = kor;

}

public int getEng() {

return eng;

}

public void setEng(int eng) {

this.eng = eng;

}

public int getMat() {

return mat;

}

public void setMat(int mat) {

this.mat = mat;

}

public int getEdp() {

return edp;

}

public void setEdp(int edp) {

this.edp = edp;

}

}

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.util.Vector;

public class Input {

private Vector<Student> vector;

Input(Vector<Student> vector) {

this.vector = vector;

}

void input(){

BufferedReader br = null;

String line = null;

try{

String path = "/home/mino/Downloads/sungjuk_utf8.dat";

br = new BufferedReader(new FileReader(new File(path)));

while((line = br.readLine()) != null){

String [] array = line.split("\\s+");

Student s = new Student(array[0], array[1], Integer.parseInt(array[2]),

              Integer.parseInt(array[3]), Integer.parseInt(array[4]),

              Integer.parseInt(array[5]));

this.vector.addElement(s);

}

}catch(IOException ex){

}finally{

try{

if(br != null) br.close();

}catch(IOException ex){}

}

}

}

import java.io.File;

import java.io.FileOutputStream;

import java.io.ObjectOutputStream;

import java.util.Vector;

public class SerializationDemo2 {

public static void main(String[] args) throws Exception{

Vector<Student> vector = new Vector<Student>(1,1);

Input input = new Input(vector);

input.input();

String path = "/home/mino/Temp";

ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(new File(path, "student.ser")));

//객체의 직렬화는 reader와 writer를 쓰지않는다. byte를 쓰는 OutputStream을 사용한다.

oos.writeObject(vector);

System.out.println("Success");

oos.close();

}

}

-------------------------------

역직렬화

import java.io.File;

import java.io.FileInputStream;

import java.io.ObjectInputStream;

import java.util.Vector;

public class SerializationDemo3 {

public static void main(String[] args) throws Exception{

String path = "/home/mino/Temp";

ObjectInputStream ois = new ObjectInputStream(new FileInputStream(new File(path, "student.ser")));

Object obj = null;

obj = ois.readObject();

Vector<Student> vector = (Vector<Student>)obj;

//System.out.println(vector.size());

for(Student s : vector){

System.out.println(s);

}

ois.close();

}

}

출력:

1101             한송이   78   87   83   78

1102             정다워   88   83   57   98

1103             그리운   76   56   87   78

1104             고아라   83   57   88   73

1105             사랑해   87   87   53   55

1106             튼튼이   98   97   93   88

1107             한아름   68   67   83   89

1108             더크게   98   67   93   78

1109             더높이   88   99   53   88

1110             아리랑   68   79   63   66

1111             한산섬   98   89   73   78

1112             하나로   89   97   78   88

----------------------

만약 위에서 Student Class에서 

transient private String name; //transient를 쓰면 이것을 빼고 직렬화를 하겠다.

위와 같이 쓰면 아래와 같이 출력된다. 출력전에는 한번더 직렬화를 해주고 역직렬화를 실행해야 한다.

1101            null   78   87   83   78

1102            null   88   83   57   98

1103            null   76   56   87   78

1104            null   83   57   88   73

1105            null   87   87   53   55

1106            null   98   97   93   88

1107            null   68   67   83   89

1108            null   98   67   93   78

1109            null   88   99   53   88

1110            null   68   79   63   66

1111            null   98   89   73   78

1112            null   89   97   78   88

ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ

=======================================================================

java.net

1. OSI7 Layers - ISO

Application Layer

Presentation Layer

Session Layer

Transport Layer -> TCP, UDP

Network Layer --> IP

Datalink Layer --> MAC Address(물리적주소)

Phisical Layer

802Model - IEEE

2. TCP, UDP

TCP --> Connection Oriented Protocol  //확실히 전송되어 안정성이 필요한 곳에서 사용. 느림.

UDP --> Connection-less Protocol   //안정성보다 속도가 빨라야하는 곳에서 사용.

3. Socket

1)IP --> DNS(를통해 IP를 알아냄)

2)#Port

 - 0 ~ 1023 : Well-known Port Number.

 - 1024 ~ 2048 :Vendor Port.

 - 2049 ~ 65535 : User Port.

Inet Address

URL

URLConnection

URLEncode

URLDecode

ServerSocket

Socket

DatagramPacket

DatagramSocket

------------------------------------------

InetAddress

import java.net.InetAddress;

import java.net.UnknownHostException;

import java.util.Scanner;

public class InetAddressDemo {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

System.out.print("Hostname : ");

String hostname = scan.next();

InetAddress ia = null;

try{

ia = InetAddress.getByName(hostname); //생성자가없어서 new 못씀  //단점: 하나만 읽어온다.

System.out.printf("%s --> %s\n", ia.getHostName(), ia.getHostAddress());

}catch(UnknownHostException ex){

System.out.println(ex.getMessage());

}

}

}

출력:

Hostname : www.naver.com

www.naver.com --> 202.131.30.11

출력:

Hostname : www.google.com

www.google.com --> 173.194.38.83

----------------------------------

쓰는 아이피 전체를 읽음.

import java.net.InetAddress;

import java.net.UnknownHostException;

import java.util.Scanner;

public class InetAddressDemo {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

System.out.print("Hostname : ");

String hostname = scan.next();

InetAddress [] array = null;

try{

array = InetAddress.getAllByName(hostname);

for(InetAddress ia : array)

System.out.printf("%s --> %s\n", ia.getHostName(), ia.getHostAddress());

}catch(UnknownHostException ex){

System.out.println(ex.getMessage());

}

}

}

출력:

Hostname : www.naver.com

www.naver.com --> 202.131.30.12

www.naver.com --> 125.209.222.141

출력:

Hostname : www.google.com

www.google.com --> 173.194.117.243

www.google.com --> 173.194.117.242

www.google.com --> 173.194.117.240

www.google.com --> 173.194.117.244

www.google.com --> 173.194.117.241

www.google.com --> 2404:6800:4004:807:0:0:0:1013

----------------------------------------------------

자기 컴퓨터의 호스트이름과 아이피를 출력하는 소스

import java.net.InetAddress;

import java.net.UnknownHostException;

public class InetAddressDemo1 {

public static void main(String[] args) throws UnknownHostException{

InetAddress ia = null;

ia = InetAddress.getLocalHost();

System.out.println(ia.getHostName() + "  --> " + ia.getHostAddress());

}

}

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VMware Workstation 깔아서 윈도우 깔기.

http://www.vmware.com/ 이동. 다운로드 탭에서 VMware Workstation 눌러줌.

VMware Workstation 10 for Linux 32-bit 다운로드.

다운받은 파일은 실행파일이 아니기 때문에 터미널에서 chmod +x VMware*.i386.bundle로 실행되게 해줌.

그리고 sudo apt-get update 로 캐시 업데이트 후.

sudo apt-get install build-essential linux-headers-$(uname -r) 해서 설치.

gksudo bash ./VMware*.i386.bundle 로 설치하는데, next 누르다가 시작시업데이트 Yes 누르고 다음은 NO 한번 눌러주고  계속 next

체험판을 쓸것이기때문에 시리얼넘버는 안넣어줌.

그리고 윈도우 설치.

vmware workstation으로 윈도우 부팅시 한글 적용.

/etc/vmware 의 config 파일을 sudo gedit config 로 열어서 제일 아랫줄에 추가

xkeymap.keysym.Hangul = 0x0f2

xkeymap.keysym.Hangul_Hanja = 0x0f1

우분투 한글

터미널에서 sudo gedit ~/.Xmodmap 열어서

keycode 122 = Hangul

keycode 121 = Hangul_Hanja

추가 후 재부팅. (파일이 없으면 그냥 열어줌)