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need any good example of volatile in synchronization



Asked on October 31, 2013
Hi,

I need any good example of volatile in synchronization which is clearly defining the use
of volatile variable.
 



Replied on November 01, 2013

  • Volatile field will be accessed only by one thread at a time (Java will put locks around it).
  • Synchronized block or method will be accessed by only one thread at a time for the whole object.
    volatile int a;

   volatile int b;


synchronized int getA(){

    return a;

}


synchronized int getB(){

    return b;

}


then two threads can access a and b concurrently, but not getA() and getB(). Only one thread can access a synchronized method across the whole object.




Replied on November 02, 2013
Good Example for volatile but need more explanation on volatile

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