App Frame

 /**
  * Class untuk menampilkan WindowFrame aplikasi
  */
 import java.awt.*;
 import javax.swing.*;
 public class AppFrame extends JFrame{
   public static void main(String[] args) {
     new AppFrame(60);
   }
   public AppFrame (int duration){
     EventQueue.invokeLater(new Runnable() {
       public void run() {
         try {
           UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
         } catch (ClassNotFoundException ex) {
         } catch (InstantiationException ex) {
         } catch (IllegalAccessException ex) {
         } catch (UnsupportedLookAndFeelException ex) {
         }
         JFrame frame = new JFrame("Traffic Light");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setLayout(new BorderLayout(1,1));
         frame.add(new TrafficLightPane(duration));
         frame.pack();
         frame.setLocationRelativeTo(null);
         frame.setVisible(true);
       }
     });
   }
 }