Difference between TreeSet and SortedSet (Java in General forum at JavaRanch)
http://lmgtfy.com/?q=what+is+the+diff+between+treeset+and+sortedset http://docs.oracle.com/javase/6/docs/api/java/util/TreeSet.html http://docs.oracle.com/javase/6/docs/api/java/util/SortedSet.html Please make an effort to do some research before posting ...