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Thread with infinite loop

 
Greenhorn
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Hello Ranchers,
Here below is a question from Mock exam


1.The code does not compile - "nt2.run() is never reached"
2 .The code compiles and runs 3 non ending non demon threads.
3.The code compiles but runs only 1 non ending, non demon thread.


Given answer is 3 but i was thinking it should be 2

As I understand, main() will continue with its next statements after starting the thread.so other 2 thread should run after the first one.

Please anybody can explain this??
Thanks in advance
--------
Shakunthala
 
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You are not even invoking a Thread..

calling run of the Runnable Target will not create a new thread of execution..

you do this...
Thread t=new Thread(nt1)
t.start()

and you should call the run direct if you wanna create a new thread...

hope help
 
Ranch Hand
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Hi Shakuntala,

Main thread is a non demon thread which will start when you execute your program. You can observe that their is no thread is started.

I.e Thread t=new Thread();
t.start();

And hence run method is called.

when object reference nt1 executes the run method, method runs into a infity loop, and control is never returned to main method and hence main method which is a non demon thread runs for ever.

Hope this helps.
 
shakunthala Divakar
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I got it.Thank you vey much
 
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