Enumerations and Nested Classes

Flashcards covering key concepts related to enumerations and nested classes in Java.

Enumeration (enum)

A data type that contains a fixed set of constants.

Enum constants

The only allowed values for an enum type.

valueOf() method

Accepts a string parameter and returns an enumeration constant.

ordinal() method

Returns an integer that represents the constant’s position in the list of constants.

switch structure

A control structure used to execute different parts of code based on the value of an expression.

Nested classes

Classes defined within another class.

Static member class

A nested class that has access to all static methods of the top-level class.

Non-static member class (inner class)

A nested class that requires an instance of the top-level class to access its data and methods.

Local class

A nested class defined within a method body.

Anonymous class

A special case of a local class that has no identifier.

type-safe

Describing a data type that allows only appropriate behaviors.

compareTo() method

Compares the ordinal value of one enum constant to another.

toString() method

Returns the name of the calling constant object.

HouseData

An inner class that stores details about a house, such as address and square footage.

Inner class

A class defined within another class, which can access the outer class's members.

Composition

A design principle where a class contains references to other classes.