ToDoListApp.java

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

public class ToDoListApp {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(ToDoListApp::createAndShowGUI);
    }

    private static void createAndShowGUI() {
        JFrame frame = new JFrame("To-Do List");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);
        frame.setLayout(new BorderLayout());

        DefaultListModel<String> listModel = new DefaultListModel<>();
        JList<String> taskList = new JList<>(listModel);
        JScrollPane scrollPane = new JScrollPane(taskList);

        JTextField taskField = new JTextField();
        JButton addButton = new JButton("Add Task");
        JButton removeButton = new JButton("Remove Selected");
        JButton clearButton = new JButton("Clear All");

        JPanel inputPanel = new JPanel(new BorderLayout());
        inputPanel.add(taskField, BorderLayout.CENTER);
        inputPanel.add(addButton, BorderLayout.EAST);

        JPanel buttonPanel = new JPanel();
        buttonPanel.add(removeButton);
        buttonPanel.add(clearButton);

        frame.add(inputPanel, BorderLayout.NORTH);
        frame.add(scrollPane, BorderLayout.CENTER);
        frame.add(buttonPanel, BorderLayout.SOUTH);

        addButton.addActionListener(e -> {
            String task = taskField.getText().trim();
            if (!task.isEmpty()) {
                listModel.addElement(task);
                taskField.setText("");
            }
        });

        removeButton.addActionListener(e -> {
            int selectedIndex = taskList.getSelectedIndex();
            if (selectedIndex != -1) {
                listModel.remove(selectedIndex);
            }
        });

        clearButton.addActionListener(e -> listModel.clear());

        frame.setVisible(true);
    }
}