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There is a newer version: 3.9.1

package org.openqa.selenium.server;

import java.awt.Robot;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.logging.Logger;

public class RobotRetriever {

  private static final Logger log = Logger.getLogger(RobotRetriever.class.getName());
  private static Robot robot;

  private static class Retriever implements Callable {

    public Robot call() throws Exception {
      return new Robot();
    }

  }

  public static synchronized Robot getRobot() throws InterruptedException, ExecutionException,
      TimeoutException {
    final FutureTask robotRetriever;
    final Thread retrieverThread;

    if (robot != null) {
      return robot;
    }
    robotRetriever = new FutureTask(new Retriever());
    log.info("Creating Robot");
    retrieverThread = new Thread(robotRetriever, "robotRetriever");  // Thread safety reviewed
    retrieverThread.start();
    robot = robotRetriever.get(10, TimeUnit.SECONDS);

    return robot;
  }

}