testevent.java

该文件在eclipse环境上运行

package test.gui;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class TestEvent {

	public static void main(String[] args) {
		JFrame frame = new JFrame("test event");
		JButton b = new JButton("button");
		b.addMouseListener(new MyListener());
		frame.add(b);
		frame.setSize(400,400);
		frame.setDefaultCloseOperation(
				JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}
class MyListener implements MouseListener{

	public void mouseClicked(MouseEvent e) {
		JButton b = (JButton) e.getSource();
		b.setText("鼠标点击");
	}

	public void mouseEntered(MouseEvent e) {
		JButton b = (JButton) e.getSource();
		b.setText("鼠标进入");
	}

	public void mouseExited(MouseEvent e) {
		JButton b = (JButton) e.getSource();
		b.setText("鼠标退出");
	}

	public void mousePressed(MouseEvent e) {
		JButton b = (JButton) e.getSource();
		b.setText("鼠标按住");
	}

	public void mouseReleased(MouseEvent e) {
		JButton b = (JButton) e.getSource();
		b.setText("鼠标抬起来");
	}
}