ScreenSaver Prevent

KeepMovingMouse.java

package poc;

import java.awt.MouseInfo;
import java.awt.Point;
import java.awt.Robot;
import java.awt.Toolkit;
import java.time.Duration;
import java.time.LocalDateTime;

/**
 * Move the mouse by one pixel every {@link #MOUSE_MOVE_INTERVAL} to prevent screen saver,
 * useful when you don't have the right permissions to change that.
 * https://stackoverflow.com/questions/4231458/moving-the-cursor-in-java
 * https://stackoverflow.com/questions/1439022/get-mouse-position
 */
public class KeepMovingMouse {

  public static final long MOUSE_MOVE_INTERVAL = Duration.ofSeconds(15)
      .toMillis();

  public static void main(String[] args) {
    try {
      final Robot r = new Robot();
      for (; ; ) {
        if (isMinuteEven()) {
          moveMousePixel(r, 1);
        } else {
          moveMousePixel(r, -1);
        }
        Thread.sleep(MOUSE_MOVE_INTERVAL);
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  private static boolean isMinuteEven() {
    return LocalDateTime.now()
        .getMinute() % 2 == 0;
  }

  static void moveMousePixel(Robot robot, int pixel) {
    final var location = getCurrentLocation();
    final int x = (int) (location.getX() + pixel);
    final int y = (int) (location.getY() + pixel);
    robot.mouseMove(x, y);
    System.out.printf("status=preventing-screen-saver, action=mouse-moved, y=%d, y=%d%n", x, y);
  }

  private static Point getCurrentLocation() {
    return MouseInfo.getPointerInfo()
        .getLocation();
  }

  static void moveMouseToTheCenter(Robot robot) {
    final int y = (int) Toolkit.getDefaultToolkit()
        .getScreenSize()
        .getHeight() / 2;
    final int x = (int) Toolkit.getDefaultToolkit()
        .getScreenSize()
        .getWidth() / 2;
    robot.mouseMove(x, y);
  }
}