VotingEligibility.java

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

public class VotingEligibility extends JFrame implements ActionListener {

    JLabel label, resultLabel;
    JTextField ageField;
    JButton checkBtn;
    JPanel panel = new JPanel(new GridLayout(3,2,5,5));

    public VotingEligibility() {
        setTitle("Voting Eligibility Checker");
        setSize(300, 600);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        // Create components
        label = new JLabel("Enter your age:");
        ageField = new JTextField(10);
        checkBtn = new JButton("Check Eligibility");
        resultLabel = new JLabel("");

        // Add action listener
        checkBtn.addActionListener(this);

        // Add components to the frame
        panel.add(label);
        panel.add(ageField);
        panel.add(checkBtn);
        panel.add(resultLabel);
        add(panel);
    }

    public void actionPerformed(ActionEvent e) {
        try {
            int age = Integer.parseInt(ageField.getText());
            if (age >= 18) {
                resultLabel.setText("You are eligible to vote.");
            } else {
                resultLabel.setText("You are NOT eligible to vote.");
            }
        } catch (NumberFormatException ex) {
            System.out.println("Please enter a valid number.");
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            VotingEligibility ve = new VotingEligibility();
            ve.setVisible(true);
        });
    }
}