以下的各句代码什么意思..
j4sxw 2003-09-15 09:22:34 protected JButton b1;
Font font = b1.getFont().deriveFont(Font.PLAIN);
b1.setMnemonic(KeyEvent.VK_D);
b1.setActionCommand("disable");
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("ButtonHtmlDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ButtonHtmlDemo newContentPane = new ButtonHtmlDemo();
newContentPane.setOpaque(true);
frame.setContentPane(newContentPane);
frame.pack();