import java.awt.event.*;
import javax.swing.*;        
import mwt.MFrame;

public class HelloSwing extends MFrame {
    public HelloSwing() {
        super("HelloSwing");
        JLabel label = new JLabel("Hello Swing World!!!");
        addContent(label);
        setSize(240,80);
        setVisible(true);
    }

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