I want to check which thread is working/running.. As 5 thread are working/running then need to pause then-> as 1 is released/complete/stop next queued thread will start/running.
How to do this
2
- 1Can't you keep track inside your program of which thread was currently released to work?Tudor– Tudor2011-12-12 09:15:48 +00:00Commented Dec 12, 2011 at 9:15
- Generally you write your algorithms so you don't need to check the state of a thread. It is only useful for detecting bugs in your application and is rarely done. If you think you need to do this its highly likely there is a better way to approach the problem.Peter Lawrey– Peter Lawrey2011-12-12 10:50:40 +00:00Commented Dec 12, 2011 at 10:50
Add a comment |
2 Answers
You can get what state a thread is in by using the getState() method which returns an Enum of Thread.States. A thread can only be in one of the following states at a given point in time.
NEW A Fresh thread that has not yet started to execute.
RUNNABLE A thread that is executing in the Java virtual machine.
BLOCKED A thread that is blocked waiting for a monitor lock.
WAITING A thread that is wating to be notified by another thread.
TIMED_WAITING A thread that is wating to be notified by another thread for a specific amount of time.
TERMINATED A thread whos run method has ended.
Thread t = new Thread(); Thread.State e = t.getState(); Thread.State[] ts = e.values(); for(int i = 0; i < ts.length; i++){ System.out.println(ts[i]); } 
Comments
Or you can use thread pool that is part of JDK, such as ExecutorService.
