import javax.swing.*;


public class DemoJFrame2
{
   public static void main(String args[])
    {
      JFrame f = new JFrame("Hello World!");
      f.setSize(400, 300);

      JLabel L = new JLabel("Man, this is way cool !");
      f.getContentPane().add(L); // Put label L on contentPane

      // f.show();  --- deprecated
      f.setVisible(true);
    }
}