Java int concurrency int is equivalent to atomicinteger incrementAndGet()？

• Java

Are these two equivalent? In other words, is the and - Operator atomic?

int i = 0;
return ++i;

AtomicInteger ai = new AtomicInteger(0);
return ai.incrementAndGet();

Solution

No, I'm actually three instructions (load I, increment, store in I) This is definitely not atomic

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