
Navigable Set Interface is added in Java 6 (1.6). It is the part of Java Collection Framework.
Salient Point of Navigable Set
Salient Point of Navigable Set
- Navigable Set can be accessed and Traversed in ascending or descending order.
- Performance of Ascending operation is likely to be faster than descending.
Important Methods in Navigable Set
- Lower(E e) : Returns the greatest element in this set which is less than the given element or NULL if there is no such element.
- Floor(E e ) : Returns the greatest element in this set which is less than or equal to given element or NULL if there is no such element.
- Ceiling(E e) : Returns the least element in this set which is greater than or equal to given element or NULL if there is no such element.
- Higher(E e) : Returns the least element in this set which is greater than the given element or NULL if there is no such element.
- pollFirst() : Retrieve and remove the first least element. Or return null if there is no such element.
- pollLast() : Retrieve and remove the last highest element. Or return null if there is no such element.
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