package dvd;import javax.swing.UIManager;import java.awt.*;import java.awt.event.*;/** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2004</p> * <p>Company: </p> * @author not attributable * @version 1.0 */public class DVDClass {  boolean packFrame = false;  //Construct the application  public DVDClass() {    Entry frame = new Entry();    frame.addWindowListener(        new WindowAdapter() {           public void windowClosing( WindowEvent e )           {              System.exit( 0 );           }        }     );    //Validate frames that have preset sizes    //Pack frames that have useful preferred size info, e.g. from their layout    if (packFrame) {      frame.pack();    }    else {      frame.validate();    }    //Center the window    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();    Dimension frameSize = frame.getSize();    if (frameSize.height > screenSize.height) {      frameSize.height = screenSize.height;    }    if (frameSize.width > screenSize.width) {      frameSize.width = screenSize.width;    }    frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);    frame.setVisible(true);  }  //Main method  public static void main(String[] args) {    try {      UIManager.setLookAndFeel(UIManager.getAuxiliaryLookAndFeels());    }    catch(Exception e) {      e.printStackTrace();    }  new DVDClass();  }}