EnumSet is a public abstract class that contains several static factory methods for creating instances.

The JDK includes two implementations that are package-private and supported by a bit vector: RegularEnumSet and. JumboEnumSet.

It is used to generate an enum set that contains all elements of the specified element type. It is used to generate an enum set from the supplied collection.

It is used to generate an empty enum set with the given element type.