Basic Java Pojo Class Concept..

Plain old java object(POJO).

POJO class simply use in all in framework in java..
and it used to describe the same things as a normal class.
most commonly beans use getter & setter to protect their member variable.
POJO class used to describe a class that doesn't need to be subclass or anythings. or implements specific (serialisable) interface a follow a specif pattern.