Java Enum.valueOf() efficiency when value does not exist

Question

Which would you consider more efficient?

The use of \'WeekDay\' is just an example:

public enum WeekDay {
    MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDA         


        

Answer 1

If your question is really about the efficiency of searching among 7 item you have already wasted too much time on it. Even the fastest search algorithms yield zero or negative benefits until N > 15 or so, other than the O(1) one.