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Issue with synchronization

 
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first of all, is there any chance that this program will ouput the line "A Hello!"? I always got "B Hello!".
if it'll never print "A Hello!", could anybody explain why?
thanks
 
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David Spades wrote:
first of all, is there any chance that this program will ouput the line "A Hello!"? I always got "B Hello!".
if it'll never print "A Hello!", could anybody explain why?



Scheduling of threads is not defined by the JVM specification. This is mainly to allow the native threading system to schedule threads as they like. This is also true with the use of condition variables (ie. wait/notify).

So, to answer your question... The behavior is not defined.

Henry
 
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Hi

I have just added a while loop and see that both B Hello and A Hello do appear but not in any deterministic order.



This should be normal.
 
Rahul Mahindrakar
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It will be good to know what are you trying to prove/test here.
 
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David Spades wrote:
first of all, is there any chance that this program will ouput the line "A Hello!"? I always got "B Hello!".
if it'll never print "A Hello!", could anybody explain why?
thanks



David ,
When I'm running your code am getting below output :

List is empty...
List is empty...
Opening...
Interrupted Exception!
New Element:'Hello!'
notifyAll called!
Closing...
Interrupted Exception!


Your code it is quite self explanatory ..

If I modify the code like this


then I get :

List is empty...
Interrupted Exception!
Opening...
New Element:'Hello!'
notifyAll called!
Closing...
A Hello!

Thanks ,
Satya
 
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