how to create JFrame in java

Assalam-o-alaikum

              Create JFrame in java



package framecreate;


 import javax.swing.JFrame;


public class myClass {



public static void main(String[]args){


JFrame frame = new JFrame();
 
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

frame.setSize(400, 300);

   frame.setTitle("this is JFrame");




}


}