Enum

An enum is a special "class" that represents a group of constants (unchangeable variables, like final variables)

We create an enum by making a new java class and writing the following:

enum Level {
  LOW,
  MEDIUM,
  HIGH
}

Lets say we wanted to represent rock, paper, scissors. Since there cannot be any other hands to play than those three it would make a lot of sence to represent this as a enum

enum RockPaperScissor {
  Rock,
  Paper,
  Scissor
}