Classical set operations for java.util.Collection

Question

Is there any built-in functionality for classical set operations on the java.util.Collection class? My specific implementation would be for ArrayList, but this sounds like s

Answer 1

Are you looking for java.util.Set interface (and its implementations HashSet and TreeSet (sorted))?
The interface defines removeAll(Collection c) which looks like substract(), and retainAll(Collection c) which looks like intersection.