Hi everyone,
I have written a simple code fragment to learn threading concepts.I have attached code I have written.
This is the shared object that contains the count variable among threads.This is my
thread class
This is my Main class
So after executing this program.I mentioned the output I have got.Out put varies when I ran the program several times.
C:\Documents and Settings\narambage\Desktop\HelloWOrld\Threads\Volatile>
java Main
Main Thread is Completed main
Increment 1 thread1
Increment 2 thread1
Increment 3 thread1
Increment 4 thread1
Increment 5 thread1
Increment 6 thread1
Increment 7 thread1
Increment 8 thread1
Increment 9 thread2
Increment 10 thread2
Increment 11 thread2
Increment 12 thread2
Increment 13 thread2
Increment 14 thread2
Increment 15 thread2
Increment 16 thread1
Increment 17 thread1
Increment 18 thread1
Increment 19 thread1
Increment 20 thread1
Increment 21 thread1
Increment 22 thread1
Increment 23 thread1
Increment 24 thread1
Increment 25 thread2
Increment 26 thread2
Increment 27 thread2
Increment 28 thread2
Increment 29 thread2
Increment 30 thread2
Increment 31 thread2
Increment 32 thread2
Increment 33 thread2
Increment 34 thread1
Increment 35 thread1
Increment 36 thread1
Increment 37 thread2
Increment 38 thread2
Increment 39 thread2
Increment 40 thread2
Q: Why do I get a unpredictable out put even if I synchronized a incrementCount() method ?