org.apache.commons.collections.iterators
Class EmptyListIterator

java.lang.Object
  org.apache.commons.collections.iterators.EmptyListIterator

All Implemented Interfaces:

java.util.Iterator, java.util.ListIterator, ResettableIterator, ResettableListIterator

public class EmptyListIterator
extends java.lang.Object
implements ResettableListIterator

Provides an implementation of an empty list iterator.

This class provides an implementation of an empty list iterator. This class provides for binary compatability between Commons Collections 2.1.1 and 3.1 due to issues with IteratorUtils.

Since:

Commons Collections 2.1.1 and 3.1

Version:

$Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $

Author:

Stephen Colebourne

Field Summary

static java.util.ListIterator	INSTANCE Singleton instance of the iterator.
static ResettableListIterator	RESETTABLE_INSTANCE Singleton instance of the iterator.

Constructor Summary

protected

EmptyListIterator() Constructor.

Method Summary

void	add(java.lang.Object obj)
java.lang.Object	getKey()
java.lang.Object	getValue()
boolean	hasNext()
boolean	hasPrevious()
java.lang.Object	next()
int	nextIndex()
java.lang.Object	previous()
int	previousIndex()
void	remove()
void	reset()
void	set(java.lang.Object obj)
java.lang.Object	setValue(java.lang.Object value)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.collections.ResettableListIterator

reset

Methods inherited from interface java.util.ListIterator

add, hasNext, hasPrevious, next, nextIndex, previous, previousIndex, remove, set

Field Detail

RESETTABLE_INSTANCE

public static final ResettableListIterator RESETTABLE_INSTANCE

Singleton instance of the iterator.

Since:

Commons Collections 3.1

INSTANCE

public static final java.util.ListIterator INSTANCE

Singleton instance of the iterator.

Since:

Commons Collections 2.1.1 and 3.1

Constructor Detail

EmptyListIterator

protected EmptyListIterator()

Constructor.

Method Detail

hasNext

public boolean hasNext()

next

public java.lang.Object next()

hasPrevious

public boolean hasPrevious()

previous

public java.lang.Object previous()

nextIndex

public int nextIndex()

previousIndex

public int previousIndex()

add

public void add(java.lang.Object obj)

set

public void set(java.lang.Object obj)

remove

public void remove()

getKey

public java.lang.Object getKey()

getValue

public java.lang.Object getValue()

setValue

public java.lang.Object setValue(java.lang.Object value)

reset

public void reset()