complete13_3.java

来自「北京大学出版社的」· Java 代码 · 共 29 行

package questions.c13;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Complete13_3 extends JFrame {
   public Complete13_3( String titleText ) {
      super( titleText );
      addWindowListener( new WindowAdapter() {
            public void windowClosing( WindowEvent e ) {
               e.getWindow().dispose();
               System.exit( 0 );
            }
         }
      );
      JLabel text
         = new JLabel( "Please center this window",
                       JLabel.CENTER );
      getContentPane().add( text, BorderLayout.CENTER );
      setSize( 300, 200 );
      centerOnDesktop();
      setVisible( true );
   }
   public void centerOnDesktop() {
      // your code goes here
   }
   public static void main( String[] args ) {
      new Complete13_3( "Complete the Solution" );
   }
}