How to call the next enumeration element inside a method?

Question

folks... I have enum Rotation with only one method - public Rotation next(). When calling rot.next() will return the next enumeration element representing the next 90 degree clock-wise rotation after rot. If, for example, intially the position at CW0 the next call of the method would return CW90 and the next call would return CW270. I've already looked what was considered to be a duplicate but my case is different. I'm really stuck in this method and cannot come up with any ideas. Please somebody help me with this. Could anyone put me on a track how to implement this method? I appreciate if anybody helps.

public enum Rotation{
  CW0, CW90, CW180, CW270;

  // Calling rot.next() will return the next enumeration element
  // representing the next 90 degree clock-wise rotation after rot.
  public Rotation next();
}

I'm pretty sure there *is* a duplicate of this, but it might take me a little while to find... — Jon Skeet, Apr 22 '15 at 06:01
http://stackoverflow.com/questions/17006239/whats-the-best-way-to-implement-next-and-previous-on-an-enum-type — Suresh Sajja, Apr 22 '15 at 06:04
Your code won't compile since next should be explicitly declared as abstract. Also, each enum constant must override the next method if it is abstract. — Chetan Kinger, Apr 22 '15 at 06:05
In my opinion, Suresh Sajja's answer is a better duplicate as the one that is set now. — isnot2bad, Apr 22 '15 at 06:07

How to call the next enumeration element inside a method?

0 Answers0