图片为何不能正常显示？

Question

import java.awt.*;
import javax.swing.*;public class InfoImage extends JPanel
{
    private DrawImage ImagePanel;
    public InfoImage()
    {
         ImagePanel=new DrawImage();
         this.add(ImagePanel,BorderLayout.CENTER);
         this.setVisible(true);
    }
    class DrawImage extends JPanel
    {
        private ImageIcon icoImage;
        public DrawImage()
        {
            icoImage=new ImageIcon("images\\"+"1.jpg");
            setSize(icoImage.getIconWidth(),icoImage.getIconHeight());
        }
        public void paint(Graphics g)
        {
         g.drawImage(icoImage.getImage(),0,0,icoImage.getIconWidth(),icoImage.getIconHeight(),this);
        }
    }
    public static void main(String argv[])
    {
        JFrame jf=new JFrame();
        jf.add(new InfoImage());
        jf.pack();
        jf.setVisible(true);
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

Answer 1

感觉Panel是不是 范围不是 真个画面 
看上去就是一个条
图片显示不全

Answer 2

显示图片我建议用 BufferedImage 
我个人认为

Answer 3

给InfoImage加个setLayout(null);jf设置个size

Answer 4

也有可能是在icoImage=new ImageIcon("images\\"+"1.jpg"); 中找不到"images\\"+"1.jpg"文件

Answer 5

这样就好了！！
注意 pack和setSize的位置
否则是不能看到图片的！除非你最大化frame
再者就是设置InfoImage 布局为null
这样添加panel不至于只是一部分
关于 pack()
是根据容器内的组件以最优的方式调整容器的大小.import java.awt.*; 
import javax.swing.*; public class  InfoImage extends JPanel 
{ 
    /**
 * 
 */
private static final long serialVersionUID = 1L;
private DrawImage ImagePanel; 
    public InfoImage() 
    { 
     setLayout(null);
    
        ImagePanel=new DrawImage(); 
        this.add(ImagePanel,BorderLayout.CENTER); 
        this.setVisible(true); 
    } 
    class DrawImage extends JPanel 
    { 
        /**
 * 
 */
private static final long serialVersionUID = 1L;
private ImageIcon icoImage; 
        public DrawImage() 
        { 
        
            icoImage=new ImageIcon("D:\\Documents and Settings\\Administrator\\桌面\\http_imgload.jpg"); 
           setSize(icoImage.getIconWidth(),icoImage.getIconHeight()); 
            //setSize(400,400);
            System.out.println(icoImage.getIconHeight());
        } 
        public void paint(Graphics g) 
        { 
        System.out.println(icoImage.getIconHeight());
        g.drawImage(icoImage.getImage(),0,0,icoImage.getIconWidth(),icoImage.getIconHeight(),this); 
        } 
    } 
    public static void main(String argv[]) 
    { 
        JFrame jf=new JFrame(); 
        
        jf.pack(); 
        jf.setSize(400,400);
       
        jf.add(new InfoImage()); 
        
        jf.setVisible(true); 
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    } 
}