frame1.java~4~

JBuilder9 精髓 source code1.rar

package gethostname;

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

/**
 * <p>Title: no</p>
 * <p>Description: This a Java builder program</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 XYLayout xYLayout1 = new XYLayout();
  private JButton jButton1 = new JButton();
  private JLabel jLabel1 = new JLabel();
  private JTextField jTextField1 = new JTextField();
  InetAddress myServer=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();
    jButton1.setText("查询IP地址的主机名");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    contentPane.setLayout(xYLayout1);
    this.setSize(new Dimension(353, 188));
    this.setTitle("Frame Title");
    jLabel1.setText("       ");
    jTextField1.setText("202.106.185.203");
    contentPane.add(jButton1,   new XYConstraints(88, 9, 172, -1));
    contentPane.add(jLabel1, new XYConstraints(24, 49, 288, 42));
    contentPane.add(jTextField1, new XYConstraints(24, 105, 310, 30));
  }
  //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 jButton1_actionPerformed(ActionEvent e) {
//取得jTextField所指定的服务器IP地址
    try {
      myServer=InetAddress.getByName(jTextField1.getText());
    }
    catch (UnknownHostException ie) {
      System.out.println("get remote Host Exception:"+ie);
}
//输出得到IP地址的服务器的主机名
  jLabel1.setText("您输入IP地址的服务器的主机名是:"+ myServer.getHostName());


  }
}