org.apache.commons.collections4.iterators

Class EmptyListIterator<E>

java.lang.Object

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

All Implemented Interfaces:

java.util.Iterator<E>, java.util.ListIterator<E>, OrderedIterator<E>, ResettableIterator<E>, ResettableListIterator<E>

public class EmptyListIterator<E>
extends java.lang.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 and Description
static java.util.ListIterator	INSTANCE Singleton instance of the iterator.
static ResettableListIterator	RESETTABLE_INSTANCE Singleton instance of the iterator.

Method Summary

Modifier and Type	Method and Description
void	add(E obj)
static <E> java.util.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

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

Methods inherited from interface java.util.ListIterator

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

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

reset

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

hasPrevious, previous

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

RESETTABLE_INSTANCE

public static final ResettableListIterator RESETTABLE_INSTANCE

Singleton instance of the iterator.

Since:

3.1

INSTANCE

public static final java.util.ListIterator INSTANCE

Singleton instance of the iterator.

Since:

2.1.1 and 3.1

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> java.util.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()