Java Enums - Switch statements vs Visitor Pattern on Enums - Performance benefits?

Question

I have been searching around for days to find an answer to this performance based issue.
After digging the Internet so far I have learned that there are couple of ways

Answer 1

Enums are, generally speaking, comparable in performance to int constants, if used in a switch statement (1).

Maybe you should rather consider something along the lines of constant specific method implementations? e.g.

public enum Mode {

  ON { Color color() {return Color.GREEN;}},
  OFF { Color color() {return Color.RED;}},
  STANDBY { Color color() {return Color.YELLOW;}},
  DEFAULT { Color color() {return Color.BLACK;}};

  abstract Color color();

}//enum Mode

And then use

getMode().color();

instead of a switch statement?!

However, I think that for a "get a color only case", there is maybe no need for methods at all.

In general, I highly recommend you Effective Java for your bookshelf. Chapter 6 would be the one that discusses Enums and Annotations.