在一个JPanel中有两个JPanel组件，一个A显示背景，另一个B显示其他一些组件，B的范围小于A且覆盖A的中间一部分，可行吗？该如何处理

class MyPanel extends Panel{            void go(){        this.setLayout(new BorderLayout());        Panel p1=new Panel();//背景        Panel p2=new Panel();        this.add(p1);        p1.setLayout(new GridLayout(3,3));        p1.add(p2,5);    }}
------解决方案--------------------
class MyPanel extends Panel{
  
  
   void go(){
       this.setLayout(new BorderLayout());
       Panel p1=new Panel();//背景
       Panel p2=new Panel();
       this.add(p1);
       p1.setLayout(new GridLayout(3,3));
       p1.add(p2,5);
   }
}
------解决方案--------------------
两个panel的载体都是同一个Panel
Java code
import java.awt.Color;import java.awt.Container;import java.awt.Dimension;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPanel;public class SubPanel extends JFrame {    private JPanel backPanel = new JPanel();    private JPanel forePanel = new JPanel();    public SubPanel() {        Container contentPane = this.getContentPane();        contentPane.add(backPanel);        backPanel.setSize(300, 300);        backPanel.setBackground(Color.BLUE);        forePanel.setPreferredSize(new Dimension(50, 50));        forePanel.setSize(new Dimension(50, 50));        JButton button = new JButton("JButton");        button.setBackground(Color.RED);        button.setForeground(Color.YELLOW);        forePanel.add(button);        contentPane.add(forePanel);        forePanel.setOpaque(false);        contentPane.setComponentZOrder(forePanel, 0);    }    /**     * @param args     */    public static void main(String[] args) {        SubPanel sp = new SubPanel();        sp.setVisible(true);        sp.setSize(300, 300);        sp.setDefaultCloseOperation(EXIT_ON_CLOSE);    }}
------解决方案--------------------
Java code
JPanel jPanel1=new JPanel();JPanel jPanelA=new JPanel();JPanel jPanelB=new JPanel();JButon jButton1=new JButton();JButon jButton2=new JButton();JLabel jLabel1=new JLabel();JLabel jLabel2=new JLabel();jPanelB.add(jLabel1);jPanelB.add(jLabel2);jPanelB.add(jButton1);jPanelB.add(jButton2);jPanel1.add(jPanelA);jPanelA.add(jPanelB);//再设置一下各JPanel组件的Layout