using volatile keyword

Question

As i understand, if we declare a variable as volatile, then it will not be stored in the local cache. Whenever thread are updating the values, it is updated to the main mem

Answer 1

This has nothing to do with volatile; those are two separate instances of ExampleThread, with their own copies of testValue1 and testValue, which are instance fields (not static class variables, which are "shared" between all instances).