frame1.java~19~

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 {
  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();

  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("客户端");
    label1.setText("消息：");
    textField1.setText("  ");
    button1.setLabel("开始发送");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    button2.setLabel("接收消息");
    button2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button2_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));
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
       System.exit(0);
    }
  }

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

  void button3_actionPerformed(ActionEvent e) {
      System.exit(0);
  }

  void button2_actionPerformed(ActionEvent e) {
    try {
          //创建数据报，获取一个数据报套接字
      DatagramSocket 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);

        //获取服务器响应，接收数据包
        packet = new DatagramPacket(buf, buf.length);
        socket.receive(packet);

        //显示接收数据
        String received = new String(packet.getData(), 0);
        textArea1.append("client information:"+received+"\n");
        //关闭DatagramSocket
        socket.close();
    }
    catch (IOException ex) {
    }
}


}