JPanel 动态修改背景图片

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public class AAA extends JFrame
{ JPanel jPanel1 = new BBB(new ImageIcon(getClass().getResource("路径")).getImage());
  按钮事件 { 把 jPanel1 更换别张图片 }
}
 
class BBB extends JPanel
{ private Image image;   public BBB(Image image) { this .image = image; } protected void paintComponent(Graphics g) { super .paintComponent(g); g.drawImage(image, 0 , 0 ,1143,855, null); //用G把Image画出来  } public void setImage(Image image) { this .image = image; } }