Is there an insertion order preserving Set that also implements List?

Question

I\'m trying to find an implementation of java.util.List and java.util.Set at the same time in Java. I want this class to allow only unique elements

Answer 1

If you won't limit yourself to JDK 6 you could use Apache common collections library which offers exact match for your need - ListOrderedSet. It's like List and Set combined together :)