急需一個java編程實現的簡單聊天窗口代碼

import java.awt.*;

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import java.awt.event.*;

import javax.swing.*;

import java.net.*;

import java.io.*;

public class ClientDemo01 {

public static void main(String[] args){

JFrame f=new JFrame("AA");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextArea ta=new JTextArea(15,30);

ta.setEditable(false); //文本域只讀

JScrollPane sp=new JScrollPane(ta); //滾動窗格

JTextField tf=new JTextField(20);

JButton b=new JButton("發送");

p1.add(sp);

p2.add(tf);

p2.add(b);

f.add(p1,"Center");

f.add(p2,"South");

f.setBounds(300,300,360,300);

f.setVisible(true);

f.setResizable(false);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Socket socket=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try{

socket=new Socket("192.168.0.4",5000);

bis=new BufferedInputStream(socket.getInputStream());

bos=new BufferedOutputStream(socket.getOutputStream());

MyThread01 mt=new MyThread01(bis,ta);

mt.start();

}catch(Exception e){

e.printStackTrace();

}

b.addActionListener(new ButtonActionListener01(tf,ta,bos));

}

}

class ButtonActionListener01 implements ActionListener{

JTextField tf;

JTextArea ta;

BufferedOutputStream bos;

public ButtonActionListener01(JTextField tf,JTextArea ta,BufferedOutputStream bos){

this.tf=tf;

this.ta=ta;

this.bos=bos;

}

public void actionPerformed(ActionEvent e){

String message=tf.getText();

if(!message.equals("")){

tf.setText(""); //清空文本框

ta.append("AA:"+message+"\n"); //添加到文本域并換行

try{

bos.write(message.getBytes());

bos.flush();

}catch(Exception ex){

System.out.println("發送失敗");

}

}

}

}

class MyThread01 extends Thread{

BufferedInputStream bis;

JTextArea ta;

public MyThread01(BufferedInputStream bis,JTextArea ta){

this.bis=bis;

this.ta=ta;

}

public void run(){

try{

while(true){

byte[] b=new byte[100];

int length=bis.read(b);

String message=new String(b,0,length);

ta.append("BB:"+message+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

} import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.net.*;

import java.io.*;

public class ServerDemo01{

public static void main(String[] args){

JFrame f=new JFrame("BB");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextArea ta=new JTextArea(12,30); //文本域，第一個參數為行數，第二個參數為列數

ta.setEditable(false); //文本域只讀

JScrollPane sp=new JScrollPane(ta); //滾動窗格

JTextField tf=new JTextField(20);

JButton b=new JButton("發送");

p1.add(sp);

p2.add(tf);

p2.add(b);

f.add(p1,"Center");

f.add(p2,"South");

f.setBounds(300,300,360,300);

f.setVisible(true);

f.setResizable(false);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

ServerSocket server=null;

Socket socket=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try{

server=new ServerSocket(5000);

//ta.append("等待AA連接...\n");

socket=server.accept();

//ta.append("AA已連接\n");

bis=new BufferedInputStream(socket.getInputStream());

bos=new BufferedOutputStream(socket.getOutputStream());

MyThread1 mt=new MyThread1(bis,ta);

mt.start();

}catch(Exception e){

e.printStackTrace();

}

b.addActionListener(new ButtonActionListener1(tf,ta,bos));

}

}

class ButtonActionListener1 implements ActionListener{

JTextField tf;

JTextArea ta;

BufferedOutputStream bos;

public ButtonActionListener1(JTextField tf,JTextArea ta,BufferedOutputStream bos){

this.tf=tf;

this.ta=ta;

this.bos=bos;

}

public void actionPerformed(ActionEvent e){

String message=tf.getText(); //獲取文本框中的內容

if(!message.equals("")){

tf.setText(""); //清空文本框

ta.append("BB:"+message+"\n"); //添加到文本域并換行

try{

bos.write(message.getBytes());

bos.flush();

}catch(Exception ex){

System.out.println("發送失敗！");

}

}

}

}

class MyThread1 extends Thread{

BufferedInputStream bis;

JTextArea ta;

public MyThread1(BufferedInputStream bis,JTextArea ta){

this.bis=bis;

this.ta=ta;

}

public void run(){

try{

while(true){

byte[] b=new byte[100];

int length=bis.read(b);

String message=new String(b,0,length);

ta.append("AA:"+message+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

}

Myeclipse如何打開別人的.Java源代碼

點擊菜單欄File——Import——然后再點擊General文件夾下的Existing?Projects?into?Workspace

——最后點擊Browse選擇你所需要導入的項目再finish即可。。

使用java編寫代碼如下要求

NewPhone類

package?com.baidu.question;

public?class?NewPhone?extends?Phone?{

private?boolean?mute?=?true;

@Override

public?void?call()?{

if(mute){

super.call();

}else{

System.out.println("語音已關閉");

}

}

//這里是直接設置

public?void?setMute(boolean?mute){

this.mute=mute;

}

//擔心你的題目是要求兩種方法，寫的第二種，下面兩個方法負責開關

public?void?openMute(){

this.mute=true;

/*

*?也可以這樣寫

*?setMute(true);

*?下邊的方法一樣

*?*/

}

public?void?closeMute(){

this.mute?=?false;

}

}

Phone類

package?com.baidu.question;

public?class?Phone?{

public?void?call(){

System.out.println("打電話");

}

}

測試類

package?com.baidu.question;

public?class?PhoneTest?{

public?static?void?main(String[]?args)?{

Phone?phone?=?new?Phone();

phone.call();

NewPhone?newPhone?=?new?NewPhone();

newPhone.call();

newPhone.setMute(false);

newPhone.call();

newPhone.openMute();

newPhone.call();

newPhone.closeMute();

newPhone.call();

}

}

測試結果

打電話

打電話

語音已關閉

打電話

語音已關閉

java如何實現按下一個鍵和按住一個鍵?????????

new Robot() .

keyPress(int keycode)

按下給定的鍵。

keyRelease(int keycode)

釋放給定的鍵。