java GUI first program

Here are the two file to make the first program in java

in first file you can write


/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package javagui;

/**
 *
 * @author jawadmahmood
 */
import java.awt.*;
import javax.swing.*;

public class JavaClassGui {
   
   JFrame  myFrame ;
   JTextField tf;
   JButton b1;
 
   
    public void initGui()
    {
       
        myFrame = new JFrame();
        Container c = myFrame.getContentPane();
        c.setLayout( new FlowLayout());
        tf = new JTextField(10);
        b1 = new JButton("My Button");
        c.add(tf);
        c.add(b1);
        myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        myFrame.setSize(500,350);
        myFrame.setVisible(true);
       
       
    }
   
    public JavaClassGui()
    {
        initGui();
    }
   
}

and the file images is 

and the main class file is 

/*

 * To change this license header, choose License Headers in Project Properties.

 * To change this template file, choose Tools | Templates

 * and open the template in the editor.

 */

package javagui;

/**

 *

 * @author jawadmahmood

 */

public class JavaGui {

    /**

     * @param args the command line arguments

     */

    public static void main(String[] args) {

        // TODO code application logic here

        

        JavaClassGui g = new JavaClassGui(); 

        

        

    }

    

}

and the image is 

then run the program and you will get the result 

as below