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
1int compareTo(E o)

This method compares this enum with the specified object for order.

2boolean equals(Object other)

This method returns true if the specified object is equal to this enum constant.

3Class<E> getDeclaringClass()

This method returns the Class object corresponding to this enum constant's enum type.

4int hashCode()

This method returns a hash code for this enum constant.

5String name()

This method returns the name of this enum constant, exactly as declared in its enum declaration.

6int 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).

7String toString()

This method returns the name of this enum constant, as contained in the declaration.

8static <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