Package org.apache.commons.collections4.iterators

Class EmptyListIterator<E>

java.lang.Object

org.apache.commons.collections4.iterators.EmptyListIterator<E>

All Implemented Interfaces:

Iterator<E>, ListIterator<E>, OrderedIterator<E>, ResettableIterator<E>, ResettableListIterator<E>

public class EmptyListIterator<E>
extends Object
implements ResettableListIterator<E>

Provides an implementation of an empty list iterator.

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

Since:

2.1.1 and 3.1

Field Summary

Fields

Modifier and Type	Field	Description
static ListIterator	INSTANCE	Singleton instance of the iterator.
static ResettableListIterator	RESETTABLE_INSTANCE	Singleton instance of the iterator.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	EmptyListIterator()	Constructor.

Method Summary

Modifier and Type	Method	Description
void	add(E obj)
static <E> ListIterator<E>	emptyListIterator()	Get a typed instance of the iterator.
boolean	hasNext()
boolean	hasPrevious()
E	next()
int	nextIndex()
E	previous()
int	previousIndex()
void	remove()
void	reset()
static <E> ResettableListIterator<E>	resettableEmptyListIterator()	Get a typed instance of the iterator.
void	set(E obj)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface java.util.ListIterator

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

Methods inherited from interface org.apache.commons.collections4.OrderedIterator

hasPrevious, previous

Methods inherited from interface org.apache.commons.collections4.ResettableIterator

reset

Field Detail

RESETTABLE_INSTANCE

public static final ResettableListIterator RESETTABLE_INSTANCE

Singleton instance of the iterator.

Since:

3.1

INSTANCE

public static final ListIterator INSTANCE

Singleton instance of the iterator.

Since:

2.1.1 and 3.1

Constructor Detail

EmptyListIterator

protected EmptyListIterator()

Constructor.

Method Detail

resettableEmptyListIterator

public static <E> ResettableListIterator<E> resettableEmptyListIterator()

Get a typed instance of the iterator.

Type Parameters:

E - the element type

Returns:

ResettableListIterator<E>

emptyListIterator

public static <E> ListIterator<E> emptyListIterator()

Get a typed instance of the iterator.

Type Parameters:

E - the element type

Returns:

ListIterator<E>

hasNext

public boolean hasNext()

next

public E next()

hasPrevious

public boolean hasPrevious()

previous

public E previous()

nextIndex

public int nextIndex()

previousIndex

public int previousIndex()

add

public void add(E obj)

set

public void set(E obj)

remove

public void remove()

reset

public void reset()