JPanel如何加标题？

[AYellow]

即实现JPanel为向下凹的面板
左上角有字

为了在界面上对组件进行分组

[AYellow]

也就是实现象Delphi中GroupBox那样的功能

[masterz]

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import javax.swing.border.*;
public class TestShowPage {
public static void main(String args[]) {
JPanel jp=new JPanel();
jp.setPreferredSize(new Dimension(800,600));
JScrollPane js = new JScrollPane();
js.getViewport().add(jp);
jp.setBorder(BorderFactory.createTitledBorder(BorderFactory.createBevelBorder(4),"title of panel"));
JFrame jf = new JFrame();
jf.getContentPane().add(js);
jf.pack();
jf.setSize(400,500);
jf.setVisible(true);
}
}