Java™ How To Program (Early Objects), Tenth Edition

Section 8.9 enum Types

• All enum types (p. 335) are reference types. An enum type is declared with an enum declaration, which is a comma-separated list of enum constants. The declaration may optionally include other components of traditional classes, such as constructors, fields and methods.

• enum constants are implicitly final, because they declare constants that should not be modified.

• enum constants are implicitly static.

• Any attempt to create an object of an enum type with operator new results in a compilation error.

• enum constants can be used anywhere constants can be used, such as in the case labels of switch statements and to control enhanced for statements.

• Each enum constant in an enum declaration is optionally followed by ...