# navigable set and sorted set

posted 6 years ago

please go through JAVA 6 API here ..

SortedSet<E> is the super interface of NavigableSet<E> and is a sub interface of Set<E>

or in other words, Iterable<E> -> Collection<E> -> Set <E> -> SortedSet<E> -> NavigableSet<E> -> TreeSet<E> is the inheritance tree.

TreeSet<E> implements NavigableSet<E>

SortedSet<E> ss = TreeSet<E> ts. headSet(E element) // This returns a SortedSet

where as

NavigableSet<E> ns = TreeSet<E> ts.headSet(E element, boolean b) // this returns a Navigable Set

this is same with tailSet() and subSet() which are in SCJP6 objectives!

hope this is clear

Prasad Kharkar wrote:what is the difference between navigable set and sorted set?

please go through JAVA 6 API here ..

SortedSet<E> is the super interface of NavigableSet<E> and is a sub interface of Set<E>

or in other words, Iterable<E> -> Collection<E> -> Set <E> -> SortedSet<E> -> NavigableSet<E> -> TreeSet<E> is the inheritance tree.

TreeSet<E> implements NavigableSet<E>

SortedSet<E> ss = TreeSet<E> ts. headSet(E element) // This returns a SortedSet

where as

NavigableSet<E> ns = TreeSet<E> ts.headSet(E element, boolean b) // this returns a Navigable Set

this is same with tailSet() and subSet() which are in SCJP6 objectives!

hope this is clear

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