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Java / Java Multithreading part II

Which is faster?
(a) public void incrementI() {

synchronized (this) {
 i = i + 1;
}
}

or

(b) public synchronized void incrementI() {

 i = i + 1;

}

Option a is faster. Because option b, which is synchronizing on the method call has to run many instructions than option a which deals only with the critical section.

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