ENUM

1. #Enum in java - serve the purpose of representing a group of named constants in a programming language

2. #Java #ENUMS are used when we know all possible values at compile time, such as choices on menu, rounding modes, command-line flags, etc.

3. The set of constants in an #enum type doesnt need to stay fixed for all time

#ENUM declaration can be done outside a class or inside a class but not inside a method

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Properties of #Enum

• Every enum is internally implemented by using Class

• Every enum constant represents an object of type enum

• Every type can be passed as an argument to switch statements.

• Every enum constant is always implicitly public static final.

  • Since it is static we can access it by using enum name

  • Since it is final, we cant create child enum

• All enums implicitly extended java.lang.Enum class. As a class can only extend one parent in Java, an enum cannot extend anything else