Java purpose of AtomicInteger

We can use AtomicInteger to avoid count++ issue in mutli-threading environment.

AtomicInteger provides incrementAndGet() and decrementAndGet() methods which are thread safe.

With use of AtomicInteger, we can solve this problem without using synchronized keyword

more: https://docs.oracle.com/javase/tutorial/essential/concurrency/atomicvars.html

          http://javarevisited.blogspot.in/2012/01/how-to-write-thread-safe-code-in-java.html