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Wait and notify

Kalyan Anand
Ranch Hand

Joined: Feb 07, 2007
Posts: 194
In the producer consumer problem.. we have multiple producer and multiple consumer threads.. so here is a question

1. Producer fills up the content and raises notify()

2. As notify was used it invoked a Producer thread
3. Producer realizes that the list isNotEmpty and it waits.

At the end of step 3 what would happen ?

a. Neither any Producer nor any Consumer executes and it hangs
b. The JVM invokes some thread again because there is no lock on the object
c. The behavior cannot be predicted and its up to JVM
d. None of the above
Steve Luke
Bartender

Joined: Jan 28, 2003
Posts: 4181
    
  21

Which of those options would be your first guess, and why? The key here is that "notify was used". What does notify do?


Steve
 
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subject: Wait and notify