How Set Title Name in JFrame in Java

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

public class Simple extends JFrame{


public Simple(){

setBounds(0,0,600,400);

setTitle("Simple Java Program");//Set Title Name

setLayout(null);



setVisible(true);
}
public static void main(String args[]){
JFrame f=new Simple();
}
}