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

public class FrameTestJPanel
{
public static void main (String [] args)
{

EventQueue.invokeLater(new Runnable()
{
public void run()
{


MFrame frame=new MFrame();
frame.setDefaultCloseOperation(MFrame.EXIT_ON_CLOSE);
frame.setVisible(true);


}

});

}


}

class MFrame extends JFrame
{
MFrame()
{
super("Hello");
setLocation(300,200);
setSize(500,400);
MJpanel panel=new MJpanel();
add(panel);

}

}

class MJpanel extends JComponent
{
public void paintComponent(Graphics g)
{
g.drawString("World!",100,100);

}

}