1    package bookExamples.ch26Graphics.carl.logPolar; 
2     
3    //package runJgui; 
4     
5     
6    public abstract class CommandButton extends javax.swing.JButton 
7            implements java.awt.event.ActionListener, Runnable { 
8        public CommandButton(String s) { 
9            super(s); 
10           addActionListener(this); 
11       } 
12    
13       public void actionPerformed(java.awt.event.ActionEvent e) { 
14           run(); 
15       } 
16    
17   // main for testing and demo purposes only 
18       public static void main(String args[]) { 
19           System.out.println("Testing graphics.carl.CommandButton via main"); 
20           java.awt.Frame f = new java.awt.Frame(); 
21           f.setLayout(new java.awt.GridLayout(1, 0)); 
22           f.add(new CommandButton("Testing command button") { 
23               public void run() { 
24                   System.out.println("gui.run in cb"); 
25                   setBackground(java.awt.Color.green); 
26               } 
27    
28           } 
29           ); 
30           f.setSize(200, 200); 
31           f.setBackground(java.awt.Color.red); 
32           f.show(); 
33       } 
34   } 
35