import java.awt.*;
import java.awt.event.*;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class ChatClient extends Frame {
 Socket s = null;
 DataOutputStream dos = null;
 DataInputStream dis = null;
 private boolean bConnected = false;

 TextField tfTxt = new TextField();

 TextArea taContent = new TextArea();

 public static void main(String[] args) {
 new ChatClient().launchFrame();
 }

 public void launchFrame() {
 setLocation(400, 300);// 窗口位置
 this.setSize(300, 300);// 大小
 add(tfTxt, BorderLayout.SOUTH);// 布局borderlayout
 add(taContent, BorderLayout.NORTH);
 pack();// 删除空白处
 // 点击错号后关闭窗口
 this.addWindowListener(new WindowAdapter() {
 public void windowClosing(WindowEvent arg0) {
 System.exit(0);
 }
 });
 tfTxt.addActionListener(new TFListener());
 setVisible(true);// 使窗口显示
 connect();

 new Thread(new RecvThread()).start();
 }

 public void connect() {
 try {
 s = new Socket("127.0.0.1", 8888);
 dos = new DataOutputStream(s.getOutputStream());
 dis = new DataInputStream(s.getInputStream());
 bConnected = true;
System.out.println("connected!");
 } catch (UnknownHostException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }

 public void disconnect(){
 try {
 dos.close();
 s.close();
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }

 private class TFListener implements ActionListener{
 @Override
 public void actionPerformed(ActionEvent e) {
 // TODO Auto-generated method stub
 String str = tfTxt.getText().trim();//拿到字符串,trim去除两边的空格
 taContent.setText(str);
 tfTxt.setText("");//回车后将输入内容转为空字符串
 try {
 dos.writeUTF(str);
 dos.flush();
 //dos.close();
 } catch (IOException e1) {
 // TODO Auto-generated catch block
 e1.printStackTrace();
 }
 }
 }
 
 private class RecvThread implements Runnable{
 @Override
 public void run() {
 // TODO Auto-generated method stub
 try {
 while (bConnected) {
 String str = dis.readUTF();
 System.out.println(str);
 }
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }
 }
}