NavigableSet

[vendikonda sravan]

Can some one explain how the fallowing methods of NavigableSet work with an example
"ceiling(E e)","floor(E e)".

Thanks

[Seetharaman Venkatasamy]

from NavigableSet documentation :

floor
E floor(E e)Returns the greatest element in this set less than or equal to the given element, or null if there is no such element.

Parameters:
e - the value to match
Returns:
the greatest element less than or equal to e, or null if there is no such element
Throws:
ClassCastException - if the specified element cannot be compared with the elements currently in the set
NullPointerException - if the specified element is null and this set does not permit null elements

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ceiling
E ceiling(E e)Returns the least element in this set greater than or equal to the given element, or null if there is no such element.

Parameters:
e - the value to match
Returns:
the least element greater than or equal to e, or null if there is no such element
Throws:
ClassCastException - if the specified element cannot be compared with the elements currently in the set
NullPointerException - if the specified element is null and this set does not permit null elements

example ? no, give a try

<edit>Hint : TreeSet implements NavigableSet </edit>

hth