Language Fundamentals

What is Identifier?

Exception

What is Exception?
Custom Exception

ArrayIndexOutOfBoundsException
IllegalArgumentException
ClassCastException
NullPointerException
NumberFormatException

IllegalStateException

Enum

(1.)Rules For Syntax of enum
(2.)toString() in enum
(3.) main() Method in enum
(4.)Overridding of Methods in enum for its constants
(5.)enum keyword, Enum class and Enumeration Interface
(6.)Can an enum class implement an Interface??
(7.) enum in switch Statement

Different Methods of Enum

(1.) Enum valueOf() Method
(2.)Enum values() Method