java swing 图片输出解决方法

package com.hello.model;import java.awt.Graphics;import java.awt.Image;import java.io.File;import java.io.IOException;import javax.imageio.ImageIO;import javax.swing.*;public class NewImage {    public static void main(String[] args) throws IOException     {        JFrame frame = new JFrame();        Image image = new ImageIcon("icon/baidu2.gif").getImage().getScaledInstance(33, -1, Image.SCALE_DEFAULT);        MyPanel canvas = new MyPanel(image);                frame.add(new JScrollPane(canvas));        frame.pack();        frame.setVisible(true);        }}class MyPanel extends JPanel{    Image image ;    final int ICON_WIDTH = 23;    final int ICON_HEIGHT = 22;        public MyPanel(Image image)    {        this.image = image;    }    public void paint(Graphics g)    {        g.drawImage( new ImageIcon("icon/baidu2.gif").getImage().getScaledInstance(33, -1, Image.SCALE_DEFAULT),(getWidth() - ICON_WIDTH)/2,(getHeight() - ICON_WIDTH)/2,null);// 1  这样写不会有图片输出        //g.drawImage(image),(getWidth() - ICON_WIDTH)/2,(getHeight() - ICON_WIDTH)/2,null); //2  可以输出图片    }}