stackVsHeap.notes

-----------------------------------------------------------
 OOP + Java Memory Storage Review
-----------------------------------------------------------

!!Bottom Line !! ==> #The objects are created in the heap and the primitive variables are storaged in the stack#

Stack:
	--> In control of #Method Invocation#
	--> Like the name suggests the stack start with Main();

	--> whenever a method is called, the method's frame is pushed to the top of the stack
		[java]
			class example{//this class is in need of instruction in the form of main
				public static void main(String args[]){
					activateFunction();//new frame is poped to the top of the stack
				}
			}
		[java]

	--> Any variable created in the main is #Local# to the main,
		any varabile created in activateFunction is #local# to that function unless specified

Heap:

	--> Instance of a class(aka. Objects), instance variable of of instance of a class resides in the heap
	--> The Stack contains their memory address in the heap
	--> which is why java is "pass by reference by value"
	--> when a varaible is re-assigned, the #Garbage collection# mechanism comes and remove the heap variable
		with no address