Java Enums: You have Grace, Elegance and Power and This is What I Love

Java Enums: You have Grace, Elegance and Power and This is What I Love: While Java 8 is coming, are you sure you know well the enums that
were introduced in Java 5? Java enums are still underestimated, and it’s
a pity since they are more useful than you might think, they’re not
just for your usual enumerated constants!
Java enum is polymorphic
Java enums are real classes that can have behavior and even data.
Let’s represent the Rock-Paper-Scissors game...

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