Java Operators

Java Control Statements

Object Oriented Programming

Java Built-in Classes

Java File Handling

Java Error & Exceptions

Java Multithreading

Java Synchronization

Java Networking

Java Collections

Java Interfaces

Java Data Structures

Java Collections Algorithms

Advanced Java

Java Miscellaneous

Java APIs & Frameworks

Java Class References

Java Useful Resources

Java - Enum class

Previous
Quiz

Introduction

The Java Enum class is the common base class of all Java language enumeration types.

Class Declaration

Following is the declaration for java.lang.Enum class −

 public abstract class Enum<E extends Enum<E>> extends Object implements Comparable<E>, Serializable

Class constructors

Sr.No. Constructor & Description
1

protected Enum(String name, int ordinal)

This is the single constructor.

Class methods

Sr.No. Method & Description
1 int compareTo(E o)

This method compares this enum with the specified object for order.
2 boolean equals(Object other)

This method returns true if the specified object is equal to this enum constant.
3 Class<E> getDeclaringClass()

This method returns the Class object corresponding to this enum constant's enum type.
4 int hashCode()

This method returns a hash code for this enum constant.
5 String name()

This method returns the name of this enum constant, exactly as declared in its enum declaration.
6 int ordinal()

This method returns the ordinal of this enumeration constant (its position in its enum declaration, where the initial constant is assigned an ordinal of zero).
7 String toString()

This method returns the name of this enum constant, as contained in the declaration.
8 static <T extends Enum<T>> T valueOf(Class<T> enumType, String name)

This method returns the enum constant of the specified enum type with the specified name.

Methods inherited

This class inherits methods from the following classes −

  • java.lang.Object

Example

Following example showcases the usage of enum in if and switch statements.

 package com.tutorialspoint; public class EnumDemo { public static void main(String args[]) { //print an Enum System.out.println(Mobile.Motorola); Mobile mobile = Mobile.Samsung; //Usage in IF statment if(mobile == Mobile.Samsung) { System.out.println("Matched"); } //Usage in Swith statment switch(mobile) { case Samsung: System.out.println("Samsung"); break; case Nokia: System.out.println("Nokia"); break; case Motorola: System.out.println("Motorola"); } } } enum Mobile { Samsung, Nokia, Motorola }

Output

Let us compile and run the above program, this will produce the following result −

 Motorola Matched Samsung
Print Page
Previous
Next
Advertisements