toolkit的问题

[weixin_40906334]

图片显示不出来，大神看看为什么
import javax.swing.*;
import java.awt.*;
public class qqq extends JFrame{
MyPanel mp;
public static void main(String[] args) {
qqq a=new qqq();

}
public qqq(){
mp=new MyPanel();
this.add(mp);
this.setSize(500, 500);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
}
}
//用于绘图和显示
class MyPanel extends JPanel{
public void paint(Graphics g){
super.paint(g);

Image im=Toolkit.getDefaultToolkit().getImage(Panel.class.getResource("images/qq.jpg"));

g.drawImage(im, 900, 900, 500, 375, this);
}
}