SwingCalculator.java

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

public class SwingCalculator {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Arithmetic Functions");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);

        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(5, 2, 10, 10));

        JLabel label1 = new JLabel("Enter the first number:");
        JTextField textField1 = new JTextField();
        JLabel label2 = new JLabel("Enter the second number:");
        JTextField textField2 = new JTextField();

        JButton addButton = new JButton("Addition");
        JButton subtractButton = new JButton("Subtraction");
        JButton multiplyButton = new JButton("Multiplication");
        JButton exitButton = new JButton("Exit");

        JLabel resultLabel = new JLabel("Result: ");

        addButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                try {
                    double num1 = Double.parseDouble(textField1.getText());
                    double num2 = Double.parseDouble(textField2.getText());
                    double result = num1 + num2;
                    resultLabel.setText("Result: " + result);
                } catch (NumberFormatException ex) {
                    JOptionPane.showMessageDialog(frame, "Please enter valid numbers.", "Error", JOptionPane.ERROR_MESSAGE);
                }
            }
        });

        subtractButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                try {
                    double num1 = Double.parseDouble(textField1.getText());
                    double num2 = Double.parseDouble(textField2.getText());
                    double result = num1 - num2;
                    resultLabel.setText("Result: " + result);
                } catch (NumberFormatException ex) {
                    JOptionPane.showMessageDialog(frame, "Please enter valid numbers.", "Error", JOptionPane.ERROR_MESSAGE);
                }
            }
        });

        multiplyButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                try {
                    double num1 = Double.parseDouble(textField1.getText());
                    double num2 = Double.parseDouble(textField2.getText());
                    double result = num1 * num2;
                    resultLabel.setText("Result: " + result);
                } catch (NumberFormatException ex) {
                    JOptionPane.showMessageDialog(frame, "Please enter valid numbers.", "Error", JOptionPane.ERROR_MESSAGE);
                }
            }
        });

        exitButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        });

        panel.add(label1);
        panel.add(textField1);
        panel.add(label2);
        panel.add(textField2);
        panel.add(addButton);
        panel.add(subtractButton);
        panel.add(multiplyButton);
        panel.add(exitButton);
        panel.add(resultLabel);

        frame.add(panel);
        frame.setVisible(true);
    }
                                                  }