brutil
Class HashSet

java.lang.Object
  |
  +--brutil.HashSet

All Implemented Interfaces:

Collection, Set

public class HashSet

extends java.lang.Object

implements Set

Inner Class Summary

protected class

HashSet.Table

Constructor Summary

HashSet()

Method Summary

java.lang.Object	add(java.lang.Object elt) Add the specified object to the Set.
void	clear() Removes all the items from this HashSet
boolean	contains(java.lang.Object elt) Tells if the specified object is contained within this set.
java.lang.Object	find(java.lang.Object elt)
boolean	isEmpty() Returns true if the Collection contains no elements, false otherwise
java.util.Iterator	iterator() Returns an iterator over the elements in the set.
java.lang.Object	remove(java.lang.Object elt) Removes the specified object from the Set, if present.
int	size() Returns the number of elements in the Set.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HashSet

public HashSet()

Method Detail

add

public java.lang.Object add(java.lang.Object elt)

Add the specified object to the Set. Unless the implementing class is also a MultiSet, there may only be one instance of the object in the set.

Specified by:

add in interface Set

Parameters:

o - The object to add to the Set.

Returns:

Object that was overwritten byte this add null otherwise.

contains

public boolean contains(java.lang.Object elt)

Tells if the specified object is contained within this set.

Specified by:

contains in interface Set

Parameters:

o - The object to search for in the Set. return size;

Returns:

true if the object is contained in the set, false otherwise.

iterator

public java.util.Iterator iterator()

Description copied from interface: Set

Returns an iterator over the elements in the set.

Specified by:

iterator in interface Set

Following copied from interface: brutil.Set

Returns:

An iterator of the elements in the set.

isEmpty

public boolean isEmpty()

Description copied from interface: Collection

Returns true if the Collection contains no elements, false otherwise

Specified by:

isEmpty in interface Set

Returns:

true if the Set is empty, false otherwise.

clear

public void clear()

Removes all the items from this HashSet

Specified by:

clear in interface Collection

remove

public java.lang.Object remove(java.lang.Object elt)

Removes the specified object from the Set, if present.

Specified by:

remove in interface Set

Parameters:

o - The object to remove.

Returns:

Object if the object was in the Set, null otherwise.

find

public java.lang.Object find(java.lang.Object elt)

Specified by:

find in interface Set

Following copied from interface: brutil.Set

Returns:

the contained item that matches the parameter with respect to its .equals()

size

public int size()

Returns the number of elements in the Set.

Specified by:

size in interface Collection

Returns:

The number of elements in the Set.