Show Balance

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class  SubtractionOfNumbers{

    public static void main(String[] args){
    JFrame f=new JFrame();
    JLabel label1=new JLabel("First Number: ");
    JLabel label2=new JLabel("Second Number: ");
    JLabel label3=new JLabel("Result: ");
    final JTextField text1=new JTextField(20);
    final JTextField text2=new JTextField(20);
    final JTextField text3=new JTextField(20);
    JButton button=new JButton("Calculate");
        button.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e){
               int num1=Integer.parseInt(text1.getText());
               int num2=Integer.parseInt(text2.getText());
               int result=0;
               if(num1>num2){
                   result=num1-num2;
               text3.setText(Integer.toString(result));
               }
               else{
                    result=num2-num1;
               text3.setText(Integer.toString(result));
               }

               }
            });
        JPanel p=new JPanel(new GridLayout(4,2));
        p.add(label1);
        p.add(text1);
        p.add(label2);
        p.add(text2);
        p.add(label3);
        p.add(text3);
        p.add(button);

        f.add(p);
        f.setVisible(true);
        f.pack();
    }
}

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class  SubtractionOfNumbers{

    public static void main(String[] args){
        String number1=JOptionPane.showInputDialog(null,"Enter Number1: ");
        int num1=Integer.parseInt(number1);
        String number2=JOptionPane.showInputDialog(null,"Enter Number2: ");
        int num2=Integer.parseInt(number2);
        int result=0;
         if(num1>num2){
                   result=num1-num2;
              JOptionPane.showMessageDialog(null,"Result is: "+Integer.toString(result));
               }
               else{
                    result=num2-num1;
              JOptionPane.showMessageDialog(null,"Result is: "+Integer.toString(result));
               }
    }
}