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A thread is alive or running if it has been started and has not yet died. To check whether a thread is alive use the isAlive() method of Thread class. It will return true if this thread is alive, otherwise return false .
Java Thread run() methodThe run() method of thread class is called if the thread was constructed using a separate Runnable object otherwise this method does nothing and returns. When the run() method calls, the code specified in the run() method is executed. You can call the run() method multiple times.
Using getAllStackTrace() Method The getAllStackTrace() method gives a stack trace of all the running threads. Then we make a set of the keys of that element because the method returns a map, and then we loop over all the elements of the set to print all the running threads.
Thread.isAlive()
You can use this method:
boolean isAlive()
It returns true if the thread is still alive and false if the Thread is dead. This is not static. You need a reference to the object of the Thread class.
One more tip: If you're checking it's status to make the main thread wait while the new thread is still running, you may use join() method. It is more handy.
I think you can use GetState(); It can return the exact state of a thread.
Check the thread status by calling Thread.isAlive.
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