6.Jpanel面板

效果：

package com.lvshitech.gui;

import java.awt.Color;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class JpanelDemo extends JPanel {
	private static final long serialVersionUID = 1L;
	
	JButton jb1 = new JButton("Jpanel");
	JButton jb2 = new JButton("Demo");
	public JpanelDemo() {
		setBackground(Color.WHITE);
		add(jb1);
		add(jb2);
	}
	
	public static void main(String[] args) {
		JpanelDemo jp = new JpanelDemo();
		jp.setBorder(BorderFactory.createTitledBorder("Hello, Border"));
		
		JFrame jFrame = new JFrame("JpanelDemo");
		jFrame.setSize(400, 200);
		jFrame.setContentPane(jp);
		jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		jFrame.setVisible(true);
	}
}