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java - atomic increment of long variable?

if a long variable is declared as :-

private volatile long counter = 0;

now if i increment it using pre-increment operator, then would the operation be atomic ?

if yes, then will it be more efficient than java.util.concurrent.atomic.AtomicLong object's increment ??

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volatile keyword only solves visibility problem. You have to use AtomicLong or synchronized method/block for atomicity (Atomicity in concurrent programming).

One more article that came out today: Demonstrating when volatile is required


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