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join() in threads

 
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hi,
I am confused with the below code which is from khalid Mughal's book


Output on my machine: 23 24 21 13 14 11 22 12
Main Thread prints 23 at line 1
Thread-0 is started.
Main Thread prints 24 at line 2
Thread-0 prints 21 at line 3
t1.join at line 4 makes Thread-0 to join after the Main thread is complete.
So Main thread continues and returns t2.
Again 13 is printed at line 1
Thread-1 is started
14 is printed at line 2
11 is printed at line 3
I don't understand how 22 is printed. Can anyone explain it?

Thanks
Sravani
 
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This piece of code has been thoroughly discussed here. Let us know if that answers your question.
 
sravani jetty
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Hi Marc,
Thanks a lot for the link. It cleared my doubt.

Thanks
Sravani
 
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