data types in java, overview
what is datatype?
Defines what type of data your variable will hold. Means depending upon the type of data, datatype is associated with the variable.
Example:
If you want to store whether user is login or not, use Boolean.
Primitive datatypes?
these datatypes are already defined by the java. these are as follow:
integers:
Byte
short
int
long
floating points:
Float
double
Char
Boolean
Abstract Datatypes ADT?
classes are the abstract datatypes, therefore the datatypes or collection that classes return are abstract e.g., Queues, Stacks etc.