I am trying to make it so after I press the start button, it does the clicks when left mouse button is being held down, but right now its not clicking at all when I hold left mouse button.

package GUI;

import Engine.AutoClicker;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JOptionPane;

public class EventHandler implements ActionListener {

    private UI ui;
    private AutoClicker autoClicker;

    public EventHandler(UI ui, AutoClicker autoClicker) {
        this.ui = ui;
        this.autoClicker = autoClicker;
    }

    @Override
    public void actionPerformed(ActionEvent actionEvent) {
        if (actionEvent.getSource().equals(ui.getStartButton())) {
            try {
                int minCPS = Integer.parseInt(ui.getMinCPSFieldText());
                int maxCPS = Integer.parseInt(ui.getMaxCPSFieldText());
                autoClicker.setMinCPS(minCPS);
                autoClicker.setMaxCPS(maxCPS);
            } catch (NumberFormatException e) {
                e.printStackTrace();
                JOptionPane.showMessageDialog(ui, "Please enter valid integers for CPS values.");
                return;
            }
            
            autoClicker.startClicking();
            System.out.println("start");
        } else if (actionEvent.getSource().equals(ui.getStopButton())) {
            autoClicker.stopClicking();
            System.out.println("stop");
        }
    }
}

package Engine;

import javax.swing.*;
import GUI.UI;

public class Engine {

    private Thread UIthread, clickerThread;
    private UI ui;
    private AutoClicker autoClicker;

    public Engine(int width, int height) {
        autoClicker = new AutoClicker();

        ui = new UI(width, height, autoClicker);
        ui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        ui.setVisible(true);

        // UI class already adds the AutoClicker as a MouseListener

        UIthread = new Thread(ui);
        UIthread.start();

        clickerThread = new Thread(autoClicker);
        clickerThread.start();
    }

    public static void main(String[] args) {
        new Engine(500, 300);
    }
}

package GUI;

import javax.swing.*;
import Engine.AutoClicker;

public class UI extends JFrame implements Runnable {

    public int width, height;
    private JButton start, stop;
    private JTextField minCPSField, maxCPSField;
    private AutoClicker autoClicker;

    public UI(int width, int height, AutoClicker autoClicker) {
        this.width = width;
        this.height = height;
        this.autoClicker = autoClicker;
        this.setLayout(null);
        this.setSize(width, height);

        // Add AutoClicker as a MouseListener
        this.addMouseListener(autoClicker);
    }

    public void init() {
        start = new JButton("Start");
        start.setBounds(100, 100, 100, 30);
        add(start);

        stop = new JButton("Stop");
        stop.setBounds(320, 100, 100, 30);
        add(stop);

        JLabel minCPSLabel = new JLabel("Min CPS:");
        minCPSLabel.setBounds(30, 50, 100, 30);
        add(minCPSLabel);

        minCPSField = new JTextField(String.valueOf(autoClicker.getMinCPS()));
        minCPSField.setBounds(100, 50, 100, 30);
        add(minCPSField);

        JLabel maxCPSLabel = new JLabel("Max CPS:");
        maxCPSLabel.setBounds(250, 50, 100, 30);
        add(maxCPSLabel);

        maxCPSField = new JTextField(String.valueOf(autoClicker.getMaxCPS()));
        maxCPSField.setBounds(320, 50, 100, 30);
        add(maxCPSField);

        EventHandler eHandler = new EventHandler(this, autoClicker);
        start.addActionListener(eHandler);
        stop.addActionListener(eHandler);
        minCPSField.addActionListener(eHandler);
        maxCPSField.addActionListener(eHandler);
    }

    @Override
    public void run() {
        init();
    }

    public String getMinCPSFieldText() {
        return minCPSField.getText();
    }

    public String getMaxCPSFieldText() {
        return maxCPSField.getText();
    }

    public JButton getStartButton() {
        return start;
    }

    public JButton getStopButton() {
        return stop;
    }
}

package Engine;

import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.InputEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Random;

public class AutoClicker extends MouseAdapter implements Runnable {

    private Robot robot;
    private boolean running = false;
    private boolean leftMouseButtonPressed = false; // Add this flag
    private int minCPS = 10;
    private int maxCPS = 20;
    private Random random = new Random();

    public AutoClicker() {
        try {
            robot = new Robot();
        } catch (AWTException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void run() {
        while (true) {
            if (running && leftMouseButtonPressed) { 
                clickMouse();
            }
            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    private void clickMouse() {
        try {
            int delay = getRandomCPS();
            robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
            Thread.sleep(delay);
            robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
            Thread.sleep(delay);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private int getRandomCPS() {
        return 1000 / (minCPS + random.nextInt(maxCPS - minCPS + 1));
    }

    public void startClicking() {
        running = true;
    }

    public void stopClicking() {
        running = false;
    }

    public void setMinCPS(int minCPS) {
        this.minCPS = minCPS;
    }

    public void setMaxCPS(int maxCPS) {
        this.maxCPS = maxCPS;
    }

    public int getMinCPS() {
        return minCPS;
    }

    public int getMaxCPS() {
        return maxCPS;
    }

    
    @Override
    public void mousePressed(MouseEvent e) {
        if (e.getButton() == MouseEvent.BUTTON1) {
            leftMouseButtonPressed = true;
        }
    }

    @Override
    public void mouseReleased(MouseEvent e) {
        if (e.getButton() == MouseEvent.BUTTON1) {
            leftMouseButtonPressed = false;
        }
    }
}

I tried adding the things in the AutoClicker like MouseEvent but I am not familiar with this stuff and had no luck, I am failing to change the value of leftMouseButtonPressed = true by holding down left click.