testchangedicon.java

有大量的java的实例

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

public class TestChangedIcon extends JApplet	implements ActionListener
{
	JButton jbtn;
	public void init()
	{
			Container c = getContentPane();
			Icon normalIcon = new ImageIcon("normal.gif");
			Icon pressedIcon = new ImageIcon("pressed.gif");
			Icon rolloverIcon = new ImageIcon("rollover.gif");
			jbtn = new JButton(normalIcon);
			jbtn.setPressedIcon(pressedIcon);
			jbtn.setRolloverIcon(rolloverIcon);
			jbtn.setRolloverEnabled(true);
			c.add(jbtn,BorderLayout.NORTH);
			jbtn.addActionListener(this);
		}
		public void actionPerformed(ActionEvent e)
		{
			showStatus("响应单击J按钮");
		}
}