Usa a classe Robot para fazer printscreens a cada 15s, e a cada 5s mover o mouse aleatóriamente e dar dois clicks.

Brinks.java

package brinks;

import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.InputEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Random;

import javax.imageio.ImageIO;

public class Brinks {

    public static void main(String[] args) {
	try {
	    final Robot r = new Robot();
	    r.delay(10000); // 10s

	    Runnable prog = new Runnable() {
		@Override
		public void run() {
		    new Thread() {
			@Override
			public void run() {
			    try {
				while (true) {
				    printScreen(r);
				    Thread.sleep(15000); // 15s
				}
			    } catch (IOException | InterruptedException e) {
			    }
			};
		    }.start();
		    while (true) {
			moveMouse(r);
			doubleClick(r);
			try {
			    Thread.sleep(5000); // 5s
			} catch (InterruptedException e) {
			}
		    }
		}
	    };

	    new Thread(prog).start();
	} catch (AWTException e) {
	}
    }

    /**
     * @param r
     *            Instance of Robot.
     * @throws IOException
     *             Exception.
     * 
     */
    protected static void printScreen(Robot r) throws IOException {
	BufferedImage bi = r.createScreenCapture(new Rectangle(0, 0, getScreenSize().width,
		getScreenSize().height));

	File outputfile = new File(getDirSaveFile() + (getPlatform() == 1 ? "\\" : "/")
		+ getRandomInt(1000000000) + ".jpg");
	ImageIO.write(bi, "jpg", outputfile);
    }

    /**
     * Mouse left click.
     * 
     * @param r
     *            Instance of Robot
     * 
     */
    protected static void click(Robot r) {
	r.mousePress(InputEvent.BUTTON1_MASK);
	r.mouseRelease(InputEvent.BUTTON1_MASK);
    }

    /**
     * Mouse Double left click
     * 
     * @param r
     *            Instance of Robot.
     * 
     */
    protected static void doubleClick(Robot r) {
	click(r);
	click(r);
    }

    /**
     * @param r
     *            Instance of Robot.
     * 
     */
    protected static void moveMouse(Robot r) {
	Dimension d = getScreenSize();
	r.mouseMove(d.width - getRandomInt(d.width), d.height - getRandomInt(d.height));
    }

    /**
     * 
     * @param v
     *            Value to generate random.
     * @return Random between 0 and v.
     */
    private static Integer getRandomInt(int v) {
	return new Random().nextInt(v);
    }

    /**
     * 
     * @return Dimension of screen.
     */
    private static Dimension getScreenSize() {
	return Toolkit.getDefaultToolkit().getScreenSize();
    }

    /**
     * 
     * @return Path to paste.
     */
    protected static Path getDirSaveFile() {
	Path p = null;
	File f0 = new File("printscreen");
	File f = new File(f0.getAbsolutePath());

	f.mkdirs();
	p = f.toPath();

	return p;
    }

    /**
     * 
     * @return 1 if windows. 0 others platform.
     */
    public static int getPlatform() {
	return System.getProperty("os.name").toLowerCase().indexOf("win") >= 0 ? 1 : 0;
    }
}