Question

I am created an enum with the following code:

public enum Operation {
    a('0'), b('1');
}

After which I have byte 0 or 1.

Now I need a static class in this enum to get the appropriate enum from a byte:

    public static Operation fromValue(byte value){ ...}

How I can do this ?

Answer 1

Something like this?

public static Operation fromValue(byte value) {
  switch (value) {
  case 0:  return Operation.a;
  case 1:  return Operation.b;
  default: throw new IllegalArgumentException();
  }
}