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      Enum Class

      Java Tutorial

      This Java tutorial is tailored for newcomers, offering a journey from basic principles to complex Java programming techniques. Completing this tutorial equips you with a solid understanding of Java, preparing you for advanced learning. You'll emerge ready to tackle the challenges of becoming a top-tier software engineer, with the skills to innovate and excel in the vast world of software development.

      Enum Class

      Java Enum Class

      Java Enum class is the common base class for all enumeration types. It is a special class that contains a group of pre-defined constant values that are known at the compile-time itself.

      Java Enum 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

      Java Enum Class Constructors

      Sr.No.
      Constructor & Description
      1
      protected Enum(String name, int ordinal)
      This is the single constructor.

      Java Enum Class Methods

      Sr.No.
      Method & Description
      1
      protected Object clone()
      This method throws CloneNotSupportedException.
      2
      int compareTo(E o)
      This method compares this enum with the specified object for order.
      3
      boolean equals(Object other)
      This method returns true if the specified object is equal to this enum constant.
      4
      protected void finalize()
      This method returns enum classes cannot have finalize methods.
      5
      Class<E> getDeclaringClass()
      This method returns the Class object corresponding to this enum constant's enum type.
      6
      int hashCode()
      This method returns a hash code for this enum constant.
      7
      String name()
      This method returns the name of this enum constant, exactly as declared in its enum declaration.
      8
      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).
      9
      String toString()
      This method returns the name of this enum constant, as contained in the declaration.
      10
      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

      Java Enum Class 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
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