frame1.java~1~

JBuilder9 精髓 source code1.rar

package udpclient;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import java.net.*;
import java.io.*;

/**
 * <p>Title: an example</p>
 * <p>Description:an  no</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: home</p>
 * @author liujun
 * @version 1.0
 */

public class Frame1 extends JFrame  implements Runnable{
  private JPanel contentPane;
  private TextArea textArea1 = new TextArea();
  private XYLayout xYLayout1 = new XYLayout();
  private Label label1 = new Label();
  private TextField textField1 = new TextField();
  private Button button1 = new Button();
  private Button button2 = new Button();
  private Button button3 = new Button();

  DatagramSocket socket = null;
  BufferedReader in = null;
  PrintWriter out = null;

  //Construct the frame
  public Frame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    textArea1.setText("   ");
    contentPane.setLayout(xYLayout1);
    this.setSize(new Dimension(400, 239));
    this.setTitle("Frame Title");
    label1.setText("消息：");
    textField1.setText("  ");
    textField1.addKeyListener(new java.awt.event.KeyAdapter() {
      public void keyPressed(KeyEvent e) {
        textField1_keyPressed(e);
      }
    });
    button1.setLabel("开始发送");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    button2.setLabel("连接");
    button2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button2_actionPerformed(e);
      }
    });
    button3.setLabel("退出");
    button3.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button3_actionPerformed(e);
      }
    });
    contentPane.add(textArea1,   new XYConstraints(8, 5, 382, 147));
    contentPane.add(textField1,  new XYConstraints(83, 157, 302, 23));
    contentPane.add(label1, new XYConstraints(20, 158, 49, 23));
    contentPane.add(button1,     new XYConstraints(18, 188, 85, 23));
    contentPane.add(button2,  new XYConstraints(202, 188, 85, 23));
    contentPane.add(button3,  new XYConstraints(304, 188, 85, 23));
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      //添加代码
   try{
     out.println("client exit!");
     out.flush();
     }catch(Exception ex){}
     finally{
       System.exit(0);
     }
    }
  }

  void button1_actionPerformed(ActionEvent e) {
    out.println(textField1.getText());
    out.flush();
    textArea1.append("client information:"+textField1.getText()+"\n");
    textField1.setText("");
  }

  void button3_actionPerformed(ActionEvent e) {
    try{
    out.println("client exit!");
    out.flush();
    }catch(Exception e2){}
    finally{
      System.exit(0);
    }
  }

  void button2_actionPerformed(ActionEvent e) {
    Thread thread = new Thread(this);
    thread.start();
  }

  void textField1_keyPressed(KeyEvent e) {
    int j=e.getKeyCode();
    if(j==e.VK_ENTER){
    out.println(textField1.getText());
      out.flush();
      textArea1.append("client information:"+textField1.getText()+"\n");
      textField1.setText("");
     }
  }
  public void run() {
        try{
          //在5438端口上打开到liujun的连接,说明它其实就是你的本地计算机名
          //如果你的计算机的名称不是“liujun”，请修改为你的计算机名称
          //创建数据报，获取一个数据报套接字
          socket = new DatagramSocket();
          //发送请求
          byte[] buf = new byte[256];
          InetAddress address = InetAddress.getByName("liujun");
          DatagramPacket packet =
              new DatagramPacket(buf, buf.length, address, 1800);
          socket.send(packet);

          in = new BufferedReader(new  InputStreamReader(socket.getInputStream()));
          out = new PrintWriter(socket.getOutputStream());
          button1.setEnabled(true);
          receiver r = new receiver();
          Thread t = new Thread(r);
          t.start();
          textArea1.append("system information：have joined to server！\n");
          button2.setEnabled(false);
        }catch(Exception e){
          textArea1.append(e.toString()+"\n");
        }
    }
    private class receiver implements Runnable{
        public void run(){
              String s1 = null;
              try{
                s1 = in.readLine();
                while(s1!= "client exit!"){
                  textArea1.append("client information:  "+s1+"\n");
                  s1 = in.readLine();
                }
                in.close();
                out.close();
                socket.close();
              }catch(Exception e){}
               button1.setEnabled(false);
            }
      }

}