Since you use JAVA as your main language, you seem to be very confused. I also studied other languages first, so I understand why you'd be confused. However, it might confuse students. And in Object-Oriented Programming-1 (Practice-6), you said that the reason class variables are reallocated is when a new object is created. It seems that a new address had to be allocated in order to change the immutable int type count. If you structure the code so that the value does not change and run the code, the address of count will be the same even if a new object is created.