Is interrupted status safe? please help.

Question

I have read the section about interrupts in the Java Tutorial and the API documentation about the interrupt() method but I was unable to find the answer to this question.
I have two threads: thread1 and thread2
The run() method for thread1 is:
public void run() {
     while(true) {
          System.out.println("Hello");
          if (Thread.currentThread().isInterrupted()) {
               break;
     System.out.println("Thread 1 ending");
}In each iteration, thread1 checks its interrupted status.
To stop the thread1, the thread2 executes the following:
thread1.interrupt();The methods interrupt() and isInterrupted() both access the interrupted status of thread1. Therefore the interrupted status of thread1 is a shared variable used by two threads. Is there any risk of inconsistency on the interrupted status caused by the concurrent access?
In other words:
I'm worried about the concurrent acces on the interrupted status variable.
Do the interrupt() and isInterrupted() methods take care of the synchronization on the interrupted status variable or should I use some synchronization mechanism?
Thank you very much for the help.

Answer 1

the only thing i'd point out, is that you need to be careful which method you use to test the interrupt status. the isInterrupted() method checks the status and leaves the status alone, whereas the interrupted() method checks the status and then clears it. make sure you are using the version which has the behavior you desire.
other than that, i can't think of any other "idioms". i guess i will mention that generally you want to use wait/notify to coordinate threads ("normal" communication). interrupt should generally only be used be used when you want to stop the progress of a thread (abnormal communication, e.g. due to a problem).