鍍金池/ 教程/ Java/ MouseAdapter 類
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MouseAdapter 類

介紹

MouseAdapter的類是一個(gè)抽象類（適配器）用于接收鼠標(biāo)事件。這個(gè)類的所有方法都是空的。這個(gè)類是方便的類創(chuàng)建偵聽器對(duì)象。

類聲明

以下是java.awt.event.MouseAdapter類聲明：

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

類的構(gòu)造函數(shù)

S.N. 構(gòu)造函數(shù)＆說明
1 MouseAdapter() 

類方法

S.N. 方法＆說明
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.

繼承的方法

這個(gè)類繼承的方法從以下類：

  • java.lang.Object

MouseAdapter 實(shí)例

選擇使用任何編輯器創(chuàng)建以下java程序 D:/ > AWT > com > yiibai > gui >

AwtAdapterDemo 
package com.yiibai.gui;

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

public class AwtAdapterDemo {
   private Frame mainFrame;
   private Label headerLabel;
   private Label statusLabel;
   private Panel controlPanel;

   public AwtAdapterDemo(){
      prepareGUI();
   }

   public static void main(String[] args){
      AwtAdapterDemo  awtAdapterDemo = new AwtAdapterDemo();  
      awtAdapterDemo.showMouseAdapterDemo();
   }

   private void prepareGUI(){
      mainFrame = new Frame("Java AWT Examples");
      mainFrame.setSize(400,400);
      mainFrame.setLayout(new GridLayout(3, 1));
      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      });    
      headerLabel = new Label();
      headerLabel.setAlignment(Label.CENTER);
      statusLabel = new Label();        
      statusLabel.setAlignment(Label.CENTER);
      statusLabel.setSize(350,100);

      controlPanel = new Panel();
      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");      

      Panel panel = new Panel();      
      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上一篇：AWT Font類下一篇：AWT CardLayout