假设想对一个鼠标的操作进行监听，假设鼠标按下、松开等。则能够使用MouseListener接口。

package com.beyole.util;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JTextArea;class MyMouseHandle extends JFrame implements MouseListener {	private JTextArea text = new JTextArea();	public MyMouseHandle() {		super.setTitle("Crystal");// 设置标题		JScrollPane pane = new JScrollPane(text);// 增加滚动栏		pane.setBounds(5, 5, 300, 200);// 设置绝对位置		super.add(pane);// 向窗口中增加组件		text.addMouseListener(this);// 增加mouse监听		super.setSize(310, 210);		super.setVisible(true);		super.addWindowListener(new WindowAdapter() {			public void windowClosing(WindowEvent arg0) {				System.exit(1);			}		});	}	public void mouseClicked(MouseEvent e)// 鼠标单击事件	{		int c = e.getButton();// 得到按下的鼠标键		String mouseInfo = null;// 接收信息		if (c == MouseEvent.BUTTON1)// 推断是鼠标左键按下		{			mouseInfo = "左键";		} else if (c == MouseEvent.BUTTON3) {// 推断是鼠标右键按下			mouseInfo = "右键";		} else {			mouseInfo = "滚轴";		}		text.append("鼠标单击：" + mouseInfo + ".\n");	}	public void mouseEntered(MouseEvent e)// 鼠标进入组件	{		text.append("鼠标进入组件.\n");	}	public void mouseExited(MouseEvent e)// 鼠标退出组件	{		text.append("鼠标退出组件.\n");	}	public void mousePressed(MouseEvent e)// 鼠标按下	{		text.append("鼠标按下.\n");	}	public void mouseReleased(MouseEvent e)// 鼠标松开	{		text.append("鼠标松开.\n");	}}public class MyMouseEventDemo {	public static void main(String[] args) {		new MyMouseHandle();	}}

程序截图：