Swing WindowAdapter类

WindowAdapter类是一个用于接收窗口事件的抽象(适配器)类。此类的所有方法都是空的。此类是用于创建侦听器对象的便捷类。

类声明

以下是java.awt.event.WindowAdapter类的声明 -

public abstract class WindowAdapter
   extends Object
      implements WindowListener, WindowStateListener, WindowFocusListener

类构造函数

类方法

方法继承

该类继承以下类中的方法 -

• java.lang.Object

WindowAdapter示例

使用编辑器创建以下Java程序：WindowAdapter.java

package com.zaixian.swing.listener;

import javax.swing.*;

import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.*;

public class WindowAdapterDemo {
   private JFrame mainFrame;
   private JLabel headerLabel;
   private JLabel statusLabel;
   private JPanel controlPanel;

   public WindowAdapterDemo(){
      prepareGUI();
   }
   public static void main(String[] args){
       WindowAdapterDemo  swingAdapterDemo = new WindowAdapterDemo();        
      swingAdapterDemo.showWindowAdapterDemo();
   }
   private void prepareGUI(){
      mainFrame = new JFrame("Java SWING Examples");
      mainFrame.setSize(400,400);
      mainFrame.setLayout(new GridLayout(3, 1));

      headerLabel = new JLabel("",JLabel.CENTER );
      statusLabel = new JLabel("",JLabel.CENTER);        
      statusLabel.setSize(350,100);

      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      });    
      controlPanel = new JPanel();
      controlPanel.setLayout(new FlowLayout());

      mainFrame.add(headerLabel);
      mainFrame.add(controlPanel);
      mainFrame.add(statusLabel);
      mainFrame.setVisible(true);  
   }
   private void showWindowAdapterDemo(){
      headerLabel.setText("Listener in action: WindowAdapter");      
      JButton okButton = new JButton("OK");
      final JFrame aboutFrame = new JFrame();
      aboutFrame.setSize(300,200);;
      aboutFrame.setTitle("WindowAdapter示例(xuhuhu.com)");

      aboutFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            aboutFrame.dispose();
         }        
      });    
      JLabel msglabel 
         = new JLabel("欢迎来到许虎虎/Swing",JLabel.CENTER);
       aboutFrame.add(msglabel);
      aboutFrame.setVisible(true);
   }
}

执行上面示例代码，得到以下结果：