Java provides two additional forms of the join() method:

• join (long milliseconds)
• join (long milliseconds, long nanos)

In the first version of the join() method, instead of indefinitely waiting for the finalization of the thread called, the calling thread waits for the milliseconds specified as the parameter of the method. For example, if the object thread1 has thread2.join(1000), thread1 suspends its execution until one of these two conditions are met:

• thread2 has finished its execution
• 1,000 milliseconds have passed

When one of these two conditions is true, the join() method returns. You can check the status of the thread to know whether the join() method was returned because it finished its execution or because the specified time had passed.

The second version of the join() method is similar to the first one, but it receives the number of milliseconds and nanoseconds as parameters.