net.sf.jtemporal.util
Class EmptySet

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractSet
          net.sf.jtemporal.util.EmptySet

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable, java.util.Collection, java.util.Set

public class EmptySet
extends java.util.AbstractSet
implements java.io.Serializable

Immutable empty read-only set (singleton).
For methods description, see java.util.Set

Version:

$Id: EmptySet.java,v 1.2 2005/06/11 19:59:21 tabeck Exp $

See Also:

Serialized Form

Method Summary

boolean	add(java.lang.Object o)
boolean	addAll(java.util.Collection parm1)
void	clear()
boolean	contains(java.lang.Object o)
boolean	containsAll(java.util.Collection parm1)
static EmptySet	getInstance()
boolean	isEmpty()
java.util.Iterator	iterator()
boolean	remove(java.lang.Object o)
int	size()
java.lang.Object[]	toArray()

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

retainAll, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

retainAll, toArray

Method Detail

getInstance

public static EmptySet getInstance()

contains

public boolean contains(java.lang.Object o)

Specified by:

contains in interface java.util.Collection

Specified by:

contains in interface java.util.Set

Overrides:

contains in class java.util.AbstractCollection

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection

Specified by:

remove in interface java.util.Set

Overrides:

remove in class java.util.AbstractCollection

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection

Specified by:

isEmpty in interface java.util.Set

Overrides:

isEmpty in class java.util.AbstractCollection

add

public boolean add(java.lang.Object o)

Specified by:

add in interface java.util.Collection

Specified by:

add in interface java.util.Set

Overrides:

add in class java.util.AbstractCollection

size

public int size()

Specified by:

size in interface java.util.Collection

Specified by:

size in interface java.util.Set

Specified by:

size in class java.util.AbstractCollection

containsAll

public boolean containsAll(java.util.Collection parm1)

Specified by:

containsAll in interface java.util.Collection

Specified by:

containsAll in interface java.util.Set

Overrides:

containsAll in class java.util.AbstractCollection

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection

Specified by:

toArray in interface java.util.Set

Overrides:

toArray in class java.util.AbstractCollection

clear

public void clear()

Specified by:

clear in interface java.util.Collection

Specified by:

clear in interface java.util.Set

Overrides:

clear in class java.util.AbstractCollection

iterator

public java.util.Iterator iterator()

Specified by:

iterator in interface java.lang.Iterable

Specified by:

iterator in interface java.util.Collection

Specified by:

iterator in interface java.util.Set

Specified by:

iterator in class java.util.AbstractCollection

addAll

public boolean addAll(java.util.Collection parm1)

Specified by:

addAll in interface java.util.Collection

Specified by:

addAll in interface java.util.Set

Overrides:

addAll in class java.util.AbstractCollection