How to stop execution after a certain time in Java?

Question

In the code, the variable timer would specify the duration after which to end the while loop, 60 sec for example.

   while(timer) {
    //run
    //terminate after 60 sec
   }

Answer 1

long start = System.currentTimeMillis();
long end = start + 60*1000; // 60 seconds * 1000 ms/sec
while (System.currentTimeMillis() < end)
{
    // run
}