Im trying to write a program which moves the mouse every 3 minutes (to stop a screen saver coming on) but I want to be able to stop and start it at will. As you can see below I have create the buttons and method but when you click run it steps into the while loop and because its in effect an infinite loop it won't look and see if you have clicked the end button.

I have tried system.exit(0) on click for the end button, having the end button pass in false to the method run() and as you can see from the code ive tried an if statement in the while loop to see if it will take notice of me! 

Any help would be greatly appreciated!

code:

```
import java.awt.AWTException;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.MouseInfo;
import java.awt.Point;
import java.awt.Robot;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Test 
{
boolean loop;
static boolean exit;

public static void main(String[] args) throws AWTException
{
    System.out.println("before");
    makeButtons();
    System.out.println("after");
}

public static void makeButtons()
{
    JFrame jfrMain = new JFrame ("Mouse Robot");
    JPanel jplMain = new JPanel();
    final JButton run = new JButton("Run");
    final JButton end = new JButton("End");

    run.setEnabled(true);
    end.setEnabled(true);

    run.addActionListener(new ActionListener()
    {
        public void actionPerformed(ActionEvent e)
        {
            //run.setEnabled(false);
            //end.setEnabled(true);
            try {
                run(true);
            } catch (AWTException e1) 
            {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
        }
    });

    end.addActionListener(new ActionListener()
    {
        public void actionPerformed(ActionEvent e)
        {
            exit = true;
        }
    });

    jplMain.setLayout(new FlowLayout());
    jplMain.add(run);
    jplMain.add(end);

    jfrMain.getContentPane().add(jplMain, BorderLayout.CENTER);
    jfrMain.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    jfrMain.pack();
    jfrMain.setVisible(true);

    }   

public static void run(boolean loop) throws AWTException
{
    Robot r2d2 = new Robot();

    while(loop)
    {

        System.out.println("1");
        Point mousePoint = MouseInfo.getPointerInfo().getLocation();
        mousePoint.translate(0, 1);
        r2d2.mouseMove(mousePoint.x, mousePoint.y);
        r2d2.delay(60000);
        //r2d2.delay(60000);
        //r2d2.delay(60000);
        System.out.println("2");
        mousePoint = MouseInfo.getPointerInfo().getLocation();
        mousePoint.translate(0, -1);
        r2d2.mouseMove(mousePoint.x, mousePoint.y);
        r2d2.delay(60000);
        //r2d2.delay(60000);
        //r2d2.delay(60000);
        System.out.println("looping");
        if (exit = true)
        {
            break;
        }
    }
}

}

```