如何限制用户在一定时间内与程序交互？

Question

I'm trying to restrict the user from interacting with the program for a certain period of time, but sadly, with no success. I've tried using Thread.sleep , but as soon as the sleep action ends, the users' input catches up and keeps executing until it's finished.

For example, if I use the code below, the program will act as mentioned above: it'll sleep for the provided period of time (1,5s) and then the users' actions will catch up (it'll print "After waiting" as much times as the user clicked while the Thread.sleep was active). So how would I prevent this? Any suggestions would be greatly appreciated.

public void mouseClicked(MouseEvent e) {
        print();
    }

public void print() {
    System.out.println("After waiting.");
    try {
        Thread.sleep(1500);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}

Answer 1

The reason is that Thread.sleep() will block the UI Thread. So by clicking the first time, you will get an output and your application will store the following events from clicking again during the time for sleeping. Then, after your GUI-Thread comes back from sleeping, the events are released and some of the print-prompts are executed until it sleeps. Because

It is not very trivial to block the UI-Thread. If you want to prevent user input, you should disable the button or the Node in general which fires the event and enable it if its processing was finished.