Java for beginners - Chapter 18 : Enums in Java

Enums in Java:

Enum is a data type in Java.
Enum contains a set of fixed constants.
Defining Enum :
Enum can be defined inside the class.
Enum can also be defined outside the class.
We can initialize values to the constants in enum.
We can use enum in switch statement.

Key points in java enum :
It improves type safety.
We can use enum in switch very easily.
It can have fields, constructors and methods.
It can be traversed.
It cam implement interface but it cannot extend class.

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