How to increment AtomicInteger twice?

Question

I need to increment AtomicInteger twice, like: ++i; ++i; By the endless ciycle, i want to increment counter twice and check it on the parity. But i'm always getting the variable which was incremented once. How to fix it?

Answer 1

    AtomicInteger counter = new AtomicInteger(100);
    counter.addAndGet(2);
    System.out.println(counter);

or

    AtomicInteger counter = new AtomicInteger(100);        
    counter.incrementAndGet();
    counter.incrementAndGet();
    System.out.println(counter);