debug12_5.java

程序练习中包括书中实例程序代码和练习中要用到的代码,是压缩文件

package questions.c12;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Debug12_5 extends JFrame {
   private JButton black, red, green;
   public Debug12_5( String titleText ) {
      super( titleText );
      addWindowListener( new WindowAdapter() {
            public void
            windowClosing( WindowEvent e ) {
               e.getWindow().dispose();
               System.exit( 0 );
            }
         }
      );
      black = new JButton( "Black" );
      red = new JButton( "Red" );
      green = new JButton( "Green" );
      Container cp = getContentPane();
      cp.add( black );
      cp.add( red );
      cp.add( green );
      pack();
      setVisible( true );
   }
   public static void main( String[] args ) {
      new Debug12_5( "Debug Question" );
   }
}