import java.awt.*;import javax.swing.*;import javax.swing.border.*; public class BorderDemo{ public static void main(String[] args) {  JFrame frame = new JFrame ("边框演示");  frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);  JPanel panel = new JPanel();  panel.setLayout (new GridLayout (0, 2, 5, 10));  panel.setBorder (BorderFactory.createEmptyBorder (5,5,5,5));   JButton p1 = new JButton();  p1.setBorder (BorderFactory.createLineBorder (Color.red, 3));  p1.add (new JLabel ("线边框"));  panel.add (p1);    JPanel p2 = new JPanel();  p2.setBorder (BorderFactory.createEtchedBorder ());  p2.add (new JLabel ("蚀刻边框"));  panel.add (p2);   JPanel p3 = new JPanel();  p3.setBorder (BorderFactory.createRaisedBevelBorder());  p3.add (new JLabel("斜面边框(凸)"));  panel.add (p3);   JPanel p4 = new JPanel();  p4.setBorder (BorderFactory.createLoweredBevelBorder());  p4.add (new JLabel ("斜面边框(凹)"));  panel.add (p4);   JPanel p5 = new JPanel();  p5.setBorder (BorderFactory.createTitledBorder ("标题"));  p5.add (new JLabel ("标题边框"));  panel.add (p5);    JPanel p6 = new JPanel();  TitledBorder tb = BorderFactory.createTitledBorder ("标题");  tb.setTitleJustification (TitledBorder.RIGHT);  p6.setBorder (tb);  p6.add (new JLabel ("标签边框(右)"));  panel.add (p6);    JPanel p7 = new JPanel();  p7.setBorder (BorderFactory.createMatteBorder (1,5,1,1,Color.yellow));  p7.add (new JLabel ("花色边框"));  panel.add (p7);    JPanel p8 = new JPanel();  Border b1 = BorderFactory.createLineBorder (Color.blue, 2);  Border b2 = BorderFactory.createEtchedBorder();  p8.setBorder (BorderFactory.createCompoundBorder (b1, b2));  p8.add (new JLabel ("组合边框"));  panel.add (p8);    JScrollPane scrollPane = new JScrollPane(panel);  scrollPane.setPreferredSize (new Dimension (300,300));  frame.getContentPane().add (panel);  frame.pack();  frame.show(); }} 

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