Thread isAlive() returning false

Asked Jul 13 '17 at 05:14

Active Jul 13 '17 at 05:29

Viewed 32 times

I have a thread call myThread.

public class MyThread extends Thread {}

Now I put myThread to the constructor of Thread.

MyThread myThread = MyThread();
Thread thread= new Thread(myThread, "myThread");

So when I call thread.start(), it will evoke the run method of myThread. When myThread run method is still running, I checked myThread.isAlive(). It returns false but thread.isAlive() returns true. Why myThread.isAlive() is returning false?

edited Jul 13 '17 at 05:29

Tavo

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asked Jul 13 '17 at 05:14

Phalguni Rajkumar

It would be less convoluted if you showed us the code, rather than trying to describe it. – Tavo Jul 13 '17 at 05:15
1

Your `myThread` thread is never started. You're confusing everything by making your `MyThread` class uselessly extend `Thread`. – Sotirios Delimanolis Jul 13 '17 at 05:16
Ok.....so it was not started.....but its run method was evoked? – Phalguni Rajkumar Jul 13 '17 at 05:17
If myThread is not runnable, I can't add it to thead constructor – Phalguni Rajkumar Jul 13 '17 at 05:20
1

Then make the class implement `Runnable`. It doesn't need to extend `Thread`. – Sotirios Delimanolis Jul 13 '17 at 05:22
ok......but still myThread.isAlive() will be false – Phalguni Rajkumar Jul 13 '17 at 05:23
1

If you do the above there is no `isAlive`. Call `isAlive` on `thread`. – Sotirios Delimanolis Jul 13 '17 at 05:29
OK...thanks.....I will check thread only – Phalguni Rajkumar Jul 13 '17 at 06:39

Thread isAlive() returning false

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