java用图片作为窗口的背景

import java.awt.Graphics; import java.awt.Image; import java.awt.Toolkit; import javax.swing.JFrame; public class ImageTest extends JFrame{ /** * */ private static final long serialVersionUID = 3774751825513743306L; public void paint(Graphics g) { super.paint(g); Image image=Toolkit.getDefaultToolkit().getImage("e:\\java\\1.jpg"); g.drawImage(image,100,100, this); } public ImageTest() { this.setTitle("my image"); this.setSize(500, 400); this.setVisible(true); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args) { new ImageTest(); } }