import java.awt.*;
import javax.swing.*;

public class ClockTest extends JFrame{
       
    public ClockTest() {
        setTitle("Prueba de Clock");
        Container contentPane= getContentPane();               
        Clock clock = new Clock();
        contentPane.add("Center", clock);       
    }
    
    public static void main(String[] args) {
        JFrame frame = new ClockTest();
        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.show();
    }       
}