View difference between Paste ID: 6pg8910L and MfvSWjnL

 package makecalculator;
 
 import javax.swing.JFrame;
 import javax.swing.JButton;
 
 import java.awt.TextField;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 
 public class CALCULATOR extends JFrame
 {
     CALCULATOR()
     {
         /* Constructing Frame */
         JFrame frame = new JFrame();
 
         frame.setTitle("MY CALCULATOR");
         frame.setBounds(0, 0, 400, 400);
         frame.setVisible(true);
         frame.setLayout(null);
         frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
 
         /* Construction Text Fields */
         final TextField tf1 = new TextField();
         tf1.setBounds(50, 300, 250, 20);
         frame.add(tf1);
         final TextField tf2 = new TextField();
         tf2.setBounds(50, 200, 250, 20);
         frame.add(tf2);
         final TextField tf3 = new TextField();
         tf3.setBounds(50, 100, 250, 20);
         frame.add(tf3);
         /* Construction Text Fields - Adding TExt fields */
 
 
 
 
 
         /*Construction button*/
         JButton b1 = new JButton();
         b1.setLocation(50,50);
         b1.setSize(50,50);
         b1.setText("+");
         /*Construction button - Adding Actions*/
         b1.addActionListener
         (
              new ActionListener()
              {
                  public void actionPerformed(ActionEvent e)
                  {
                     String s1 = tf1.getText();
                     String s2 = tf2.getText();
                     int num1=Integer.parseInt(s1);
                     int num2=Integer.parseInt(s2);
                     int sum = num1+num2;
                     tf3.setText(Integer.toString(sum));
                  }
 
              }
         );
         /*Construction button - adding button b1*/
         frame.add(b1);
     }
 }
 public class MakeCalculator
 {
     public static void main(String[] args)
     {
         CALCULATOR c = new CALCULATOR();
     }
 }