一直就想学习java的桌面编程，可惜直到现在因为是在unix上的原因并不需要java程序有界面，不过自己还是想好好学习学习。所以从今天开始总结经验：

1 import java.awt.*;
2 import java.awt.event.*;
3 import javax.swing.*;
4
5 public class ToolbarFrame2 extends Frame {
6
7   // 使用Swing组件
8   JButton cutButton, copyButton, pasteButton;
9   JButton javaButton, macButton, motifButton, winButton;
10
11   public ToolbarFrame2( ) {
12     super("Toolbar Example (Swing)");
13     setSize(450, 250);
14
15         //退出
16     addWindowListener(new WindowAdapter( ) {
17       public void windowClosing(WindowEvent e) {
18         System.exit(0);
19       }
20     });
21        
22         //匿名类来出来copy cut  paste事件
23     ActionListener printListener = new ActionListener( ) {
24       public void actionPerformed(ActionEvent ae) {
25         System.out.println(ae.getActionCommand( ));
26       }
27     };
28  
29     // 上层的工具面版.
30     JPanel toolbar = new JPanel( );
31     toolbar.setLayout(new FlowLayout(FlowLayout.LEFT));//流式布局
32
33     cutButton = new JButton("Cut");
34     cutButton.addActionListener(printListener);
35     toolbar.add(cutButton);
36
37     copyButton = new JButton("Copy");
38     copyButton.addActionListener(printListener);
39     toolbar.add(copyButton);
40
41     pasteButton = new JButton("Paste");
42     pasteButton.addActionListener(printListener);
43     toolbar.add(pasteButton);
44
45     add(toolbar, BorderLayout.NORTH);
46
47     // 添加感观按钮
48     JPanel lnfPanel = new JPanel( );
49     LnFListener lnfListener = new LnFListener(this);
50     macButton = new JButton("Mac");
51     macButton.addActionListener(lnfListener);
52     lnfPanel.add(macButton);
53     javaButton = new JButton("Metal");
54     javaButton.addActionListener(lnfListener);
55     lnfPanel.add(javaButton);
56     motifButton = new JButton("Motif");
57     motifButton.addActionListener(lnfListener);
58     lnfPanel.add(motifButton);
59     winButton = new JButton("Windows");
60     winButton.addActionListener(lnfListener);
61     lnfPanel.add(winButton);
62     add(lnfPanel, BorderLayout.SOUTH);
63   }
64
65   public static void main(String args[]) {
66     ToolbarFrame2 tf2 = new ToolbarFrame2( );
67     tf2.setVisible(true);
68   }
69 }

1 import java.awt.*;
2 import java.awt.event.*;
3 import javax.swing.*;
4
5
6 public class LnFListener implements ActionListener {
7   Frame frame;
8
9   public LnFListener(Frame f) {
10     frame = f;
11   }
12
13   public void actionPerformed(ActionEvent e) {
14     String lnfName = null;
15     if (e.getActionCommand( ).equals("Mac")) {
16       lnfName = "com.apple.mrj.swing.MacLookAndFeel";
17     } else if (e.getActionCommand( ).equals("Metal")) {
18       lnfName = "javax.swing.plaf.metal.MetalLookAndFeel";
19     } else if (e.getActionCommand( ).equals("Motif")) {
20       lnfName = "com.sun.java.swing.plaf.motif.MotifLookAndFeel";
21     } else if (e.getActionCommand( ).equals("Windows")) {
22       lnfName = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
23     } else {
24       System.err.println("Unrecognized L&F request action: " +
25         e.getActionCommand( ));
26       return;
27     }
28     try {
29       UIManager.setLookAndFeel(lnfName);//设置当前默认外观
30       SwingUtilities.updateComponentTreeUI(frame);//通过当前外观初始化其 UI
31     }
32     catch (UnsupportedLookAndFeelException ex1) {
33       System.err.println("Unsupported LookAndFeel: " + lnfName);
34     }
35     catch (ClassNotFoundException ex2) {
36       System.err.println("LookAndFeel class not found: " + lnfName);
37     }
38     catch (InstantiationException ex3) {
39       System.err.println("Could not load LookAndFeel: " + lnfName);
40     }
41     catch (IllegalAccessException ex4) {
42       System.err.println("Cannot use LookAndFeel: " + lnfName);
43     }
44   }
45 }

先编译LnFListener  再编译ToolbarFrame2  就可以了

效果图如下：