import javax.swing.*;

public class SwingDemo {
     SwingDemo(){
         JFrame jfrm = new JFrame("A Simple Swing Application");
         jfrm.setSize(275, 100);
         jfrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

         JLabel jlab = new JLabel("    Swing - the modern Java GUI    ");
         jfrm.add(jlab);
         jfrm.setVisible(true);
     }

     public static void main(String args[]){
         new SwingDemo();
     }
}