Java Enumerated Type and Java Wrapper Classes

As the name suggests, wrapper classes are objects encapsulating primitive Java types. Each Java primitive has a corresponding wrapper: boolean, byte, short, char, int, long, float, double. Boolean, Byte, Short, Character, Integer, Long, Float, Double.
The enumerated, or enum, data type in Java is used to describe a specific set of values for a variable. They are static or final and type-safe. They can not change or be modified. Enum types are reference type, meaning they act like a class and can have their own constructors and methods.