This project is purely based on core java concepts such as oops concepts, collection framework, recursion & detailed information are mentioned below :-

It is used to inherits common properties from particular gadegts category such as in mobile concepts all types of mobile are having some common properties which are included in all the mobile so writing same lines of code repitetive we use inheritance concept to inherits those properites.

The process of binding state and behaviours of an object together is known as Encapsulation. It is used to achieve data hiding

Ability of an object to exhibits more than one form is known as polymorphism

The process of displaying the things which are required and hiding the things which are not reuired is known as Abstraction.

Class is having more than one method with same but different formal arguments Either differening length or differening data type.

Sub class non-static overrides superclass non-static method is known as method overriding. Subclass and Superclass is having non-static method with the same name and same formal argument is known as method overriding.

It is a block of statement used to perform specific task Method have return type of data Method name can be anything Method can be executed in 3 ways with directly, by using class name, object reference.

1. No Argument Method:- The method which does not have any formal argument is called as No Argument Method.
2. Parameterized Method:- The mehod which has formal arguments is called as paramterized Method.

Formal Arguments:- Variable creates inside the method is known as Formal Arguments. Actual Arguments:- Data passed inside methood calling statements is known as Actual Arguments.