Click here to watch in Youtube :
https://www.youtube.com/watch?v=1f_xnkZQ7m4&list=UUhwKlOVR041tngjerWxVccw

enum Operation
{
    PLUS, MINUS, MULTIPLY, DIVIDE;

}

public class EnumDemo
{
    public static void main(String[] args)
    {
        
        Operation[] operationArray = Operation.values();
        
        /*
         * To loop a Enum object.
         */
        for (Operation operation : operationArray)
        {
            System.out.println(operation);
        }
    }
}

PLUS
MINUS
MULTIPLY
DIVIDE