Swing - WindowAdapter 類

介紹

WindowAdapter 類是一個用於接收視窗事件的抽象（介面卡）類。此類中的所有方法都是空的。此類是建立監聽器物件的便利類。

類宣告

以下是 java.awt.event.WindowAdapter 類的宣告：

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

類建構函式

類方法

繼承的方法

此類繼承自以下類：

• java.lang.Object

WindowAdapter 示例

使用您選擇的任何編輯器建立以下 Java 程式，例如在 D:/ > SWING > com > tutorialspoint > gui >

SwingAdapterDemo.java

package com.tutorialspoint.gui;

import java.awt.*;
import java.awt.event.*;

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

   public SwingAdapterDemo(){
      prepareGUI();
   }
   public static void main(String[] args){
      SwingAdapterDemo  swingAdapterDemo = new SwingAdapterDemo();        
      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 Demo");
      
      aboutFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            aboutFrame.dispose();
         }        
      });    
      JLabel msglabel 
         = new JLabel("Welcome to TutorialsPoint SWING Tutorial.",JLabel.CENTER);
	   aboutFrame.add(msgLabel);
      aboutFrame.setVisible(true);
   }
}

使用命令提示符編譯程式。轉到 D:/ > SWING 並鍵入以下命令。

D:\SWING>javac com\tutorialspoint\gui\SwingAdapterDemo.java

如果未發生錯誤，則表示編譯成功。使用以下命令執行程式。

D:\SWING>java com.tutorialspoint.gui.SwingAdapterDemo

驗證以下輸出。