Write a Program to show “Hello World ” in a Frame using Swing Package

import javax.swing.JFrame;
import javax.swing.JLabel;

public class HelloWorldFrame extends JFrame
{
public static void main(String args[])
{
new HelloWorldFrame();
}
HelloWorldFrame()
{
JLabel jlbHelloWorld = new JLabel("Hello World");
add(jlbHelloWorld);
this.setSize(100, 100);
// pack();
setVisible(true);
}
}