Simple Types (Primitive Data types)

Simple or value type variables are those, which are assigned space in the stack instead of

the heap. All the primitive types such as int, double etc are value type variables. The

simple types basically consist of Boolean and Numeric types, where Numeric is further

divided into Integral and Floating Point.

The first rule of value types is that they cannot be null. Anytime you declare a variable of

value type, you have allocated the number of bytes associated with that type on the stack

and are working directly with that allocated array of bits. In addition, when you pass a

variable of value type, you are passing that variable’s value and not a reference to the

underlying object.