MouseAdapter的类是一个抽象类（适配器）用于接收鼠标事件。这个类的所有方法都是空的。这个类是方便的类创建监听器对象。

类声明

以下是声明 java.awt.event.MouseAdapter类：

public abstract class MouseAdapter
   extends Object
      implements MouseListener, MouseWheelListener, MouseMotionListener

类构造函数

S.N.	构造函数 & 描述
1	MouseAdapter()

类方法

S.N.	方法 & 描述
1	void mouseClicked(MouseEvent e)  Invoked when the mouse button has been clicked (pressed and released) on a component.
2	void mouseDragged(MouseEvent e)  Invoked when a mouse button is pressed on a component and then dragged.
3	void mouseEntered(MouseEvent e)  Invoked when the mouse enters a component.
4	void mouseExited(MouseEvent e)  Invoked when the mouse exits a component.
5	void mouseMoved(MouseEvent e)  Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed.
6	void mousePressed(MouseEvent e)  Invoked when a mouse button has been pressed on a component.
7	void mouseReleased(MouseEvent e)  Invoked when a mouse button has been released on a component.
8	void mouseWheelMoved(MouseWheelEvent e)  Invoked when the mouse wheel is rotated.

方法继承

这个类从以下类继承的方法：

• java.lang.Object

MouseAdapter 例子

选择使用任何编辑器创建以下java程序在 D:/ > SWING > com > yiibai > gui >

SwingAdapterDemo.java

package com.yiibai.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){
      AwtAdapterDemo  awtAdapterDemo = new AwtAdapterDemo();  
      swingAdapterDemo.showMouseAdapterDemo();
   }

   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 showMouseAdapterDemo(){
      headerLabel.setText("Listener in action: MouseAdapter");      

      JPanel panel = new JPanel();      
      panel.setBackground(Color.magenta);
      panel.setLayout(new FlowLayout());        
      panel.addMouseListener(new MouseAdapter(){
         public void mouseClicked(MouseEvent e) {
            statusLabel.setText("Mouse Clicked: ("
            +e.getX()+", "+e.getY() +")");
         }                
      });

      JLabel msglabel 
      = new JLabel("Welcome to TutorialsPoint SWING Tutorial."
      ,JLabel.CENTER);
      
      msglabel.addMouseListener(new MouseAdapter(){
         public void mouseClicked(MouseEvent e) {
            statusLabel.setText("Mouse Clicked: ("
            +e.getX()+", "+e.getY() +")");
         }                
      });
      panel.add(msglabel);
      controlPanel.add(panel);
      mainFrame.setVisible(true);  
   }
}

编译程序，使用命令提示符。到 D:/ > SWING 然后输出以下命令。

D:SWING>javac comyiibaiguiSwingAdapterDemo.java

如果没有错误出现，这意味着编译成功。使用下面的命令来运行程序。

D:SWING>java com.yiibai.gui.SwingAdapterDemo

验证下面的输出