java.util
Class HashSet

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractSet
          java.util.HashSet

All Implemented Interfaces:

Serializable, Cloneable, Collection, Set

Direct Known Subclasses:

LinkedHashSet

public class HashSet
extends AbstractSet
implements Set, Cloneable, Serializable

See Also:

Serialized Form

Constructor Summary

HashSet()

HashSet(Collection c)

HashSet(int initialCapacity)

Method Summary

boolean	add(Object o)
void	clear()
Object	clone()
boolean	contains(Object o)
Iterator	iterator()
boolean	remove(Object o)
int	size()

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, isEmpty, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

addAll, containsAll, equals, hashCode, isEmpty, removeAll, retainAll, toArray, toArray

Constructor Detail

HashSet

public HashSet()

HashSet

public HashSet(int initialCapacity)

HashSet

public HashSet(Collection c)

Method Detail

add

public boolean add(Object o)

Specified by:

add in interface Collection

Specified by:

add in interface Set

Overrides:

add in class AbstractCollection

clear

public void clear()

Specified by:

clear in interface Collection

Specified by:

clear in interface Set

Overrides:

clear in class AbstractCollection

clone

public Object clone()

Overrides:

clone in class Object

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection

Specified by:

contains in interface Set

Overrides:

contains in class AbstractCollection

iterator

public Iterator iterator()

Specified by:

iterator in interface Collection

Specified by:

iterator in interface Set

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection

Specified by:

remove in interface Set

Overrides:

remove in class AbstractCollection

size

public int size()

Specified by:

size in interface Collection

Specified by:

size in interface Set