package example17_1;
import java.awt.FlowLayout;

import javax.swing.*;
public class example17_1 extends JFrame{
public static void main(String[] args) {
	example17_1 frame = new example17_1();
	frame.setVisible(true);
}
public example17_1(){
	super();
	setTitle("窗体");
	setBounds(100,100,500,375);
	getContentPane().setLayout(null);
	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	
	
	ImageIcon usIcon = new ImageIcon("pic/3.gif");
	ImageIcon caIcon = new ImageIcon("pic/1.gif");
	ImageIcon ukIcon = new ImageIcon("pic/2.gif");
	
	JButton jbt = new JButton("Click it",usIcon);
	jbt.setBounds(110,110,25,25);
	jbt.setPressedIcon(caIcon);
	jbt.setRolloverIcon(ukIcon);
	
	getContentPane().add(jbt);
}
}