An enum is a special "class" that represents a group of constants (unchangeable variables, like final variables).
To create an enum, use the enum keyword (instead of class or interface), and separate the constants with a comma. Note that they should be in uppercase letters:
Example
enum Level {
LOW,
MEDIUM,
HIGH
}
You can access enum constants with the dot syntax:
Level myVar = Level.MEDIUM;
Enum is short for "enumerations", which means "specifically listed".
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