如何从 Robot 类中按 ENTER 键？

Question

I have created a method to click a specific addon from firefox toolbar and everything is working fine on Windows os. But when I try to perform the same action from Jenkins server that is using a Linux machine it can not perform the robot.keyPress(KeyEvent.VK_Enter).

    Robot robot = new Robot();
    robot.keyPress(KeyEvent.VK_CONTROL);
    robot.keyPress(KeyEvent.VK_L);
    robot.keyRelease(KeyEvent.VK_L);
    robot.keyRelease(KeyEvent.VK_CONTROL);
    Thread.sleep(2000);

    //move to addons
    Robot robot1 = new Robot();
    robot1.keyPress(KeyEvent.VK_TAB);
    robot1.keyRelease(KeyEvent.VK_TAB);
    Thread.sleep(1000);
    robot1.keyPress(KeyEvent.VK_TAB);
    robot1.keyRelease(KeyEvent.VK_TAB);
    Thread.sleep(1000);

    //move to simple-modify-header addon
    Robot robot3 = new Robot();
    robot3.keyPress(KeyEvent.VK_RIGHT);
    robot3.keyRelease(KeyEvent.VK_RIGHT);
    Thread.sleep(2000);
    robot3.keyPress(KeyEvent.VK_RIGHT);
    robot3.keyRelease(KeyEvent.VK_RIGHT);
    Thread.sleep(2000);
    robot3.keyPress(KeyEvent.VK_RIGHT);
    robot3.keyRelease(KeyEvent.VK_RIGHT);
    Thread.sleep(2000);
    robot3.keyPress(KeyEvent.VK_RIGHT);
    robot3.keyRelease(KeyEvent.VK_RIGHT);
    Thread.sleep(2000);


    //click simple-modify-header addon
    Robot robot2 = new Robot();
    robot2.keyPress(KeyEvent.VK_ENTER);
    robot2.keyRelease(KeyEvent.VK_ENTER);
    Thread.sleep(1000);

I tried using different robot instances, but it is still stucking on pressin ENTER.

Answer 1

This worked fine for me:

public static void robotDoEnter()
    {
        try {
            Robot robot = new Robot();
            robot.keyPress(KeyEvent.VK_ENTER);
            robot.delay(300);
            robot.keyRelease(KeyEvent.VK_ENTER);
            robot.delay(300);
        } catch (AWTException e) {
            e.printStackTrace();
        }
    }