enum_basic.md

Introduction

A enum is a special "class" that represents a group of constants (Unchangeable variables like final variables)

Declaration

public enum Level{
    LOW,
    MEDIUM,
    HIGH
}

Enum is short for "enumerations" which means "specially listed"

Diff Between Enums & Classes

• enum constants are/must be public, static and final whereas class can be anytype we knows
• An enum can have attributes and methods
• An enum cannot be used to create objects. (It cannot extend other classes but can implement interfaces)

When and Why we use ENUMs

• We can use where we will not change values like months, days, colors etc.