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Stack memory stores primitive types and the addresses of objects.

The object values are stored in heap memory. An object reference on the stack is only an address that refers to the place in heap memory where that object is kept.

Primitive data types are stored in stack unless they are part of an object.Objects/instances are stored on heap and if Objects/Instances contains primitive data types then in this case primitive data types are stored on heap

Primitive data types stored in stack memory.
Object stored in Heap memory. * Reference for the object stored in the Stack point to the object.

HEAP

I think it should be in the heap .

The storage of primitive data types depends upon the type of the variable.
If the variable is a local variable whose scope is with in the method then it is stored in "stack".
If the variable is a static variable whose scope the entire class then it is stored in the "Class context area",where as if the variable is a non static variable whose scope is with in the object then it is stored in the "Heap"

It does not depend on whether it is a primitive data type or not, It depends on whether it is an Instance variable or a local variable.
All local variables are stored in the stack along with their methods within which they are declared.
All instance variables/objects which contain primitive types are stored on the heap even if they are declared inside a method.Only their references stay in the stack if declared inside a method.

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