debug13_1.java

北京大学出版社的

package questions.c13;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Debug13_1 extends JFrame {
   public Debug13_1( String titleText ) {
      super( titleText );
      addWindowListener( new WindowAdapter() {
            public void windowClosing( WindowEvent e ) {
               e.getWindow().dispose();
               System.exit( 0 );
            }
         }
      );
      JLabel l = new JLabel( "Debug question" );
      l.setColor( green );
      getContentPane().add( l, BorderLayout.CENTER );
      setSize( 300, 100 );
      setVisible( true );
   }
   public static void main( String[] args ) {
      new Debug13_1( "Debug Question" );
   }
}