How to exit a while loop after a certain time?

Question

I have a while loop and I want it to exit after some time has elapsed.

For example:

while(condition and 10 sec has not passed){

}

Answer 1

long startTime = System.currentTimeMillis(); //fetch starting time
while(false||(System.currentTimeMillis()-startTime)<10000)
{
    // do something
}

Thus the statement

(System.currentTimeMillis()-startTime)<10000

Checks if it has been 10 seconds or 10,000 milliseconds since the loop started.

EDIT

As @Julien pointed out, this may fail if your code block inside the while loop takes a lot of time.Thus using ExecutorService would be a good option.

First we would have to implement Runnable

class MyTask implements Runnable
{
    public void run() { 
        // add your code here
    }
}

Then we can use ExecutorService like this,

ExecutorService executor = Executors.newSingleThreadExecutor();
executor.invokeAll(Arrays.asList(new MyTask()), 10, TimeUnit.SECONDS); // Timeout of 10 seconds.
executor.shutdown();