com.google.common.collect

Class ForwardingListIterator<E>

java.lang.Object

com.google.common.collect.ForwardingObject

com.google.common.collect.ForwardingIterator<E>

com.google.common.collect.ForwardingListIterator<E>

All Implemented Interfaces:

Iterator<E>, ListIterator<E>

@GwtCompatible
public abstract class ForwardingListIterator<E>
extends ForwardingIterator<E>
implements ListIterator<E>

A list iterator which forwards all its method calls to another list iterator. Subclasses should override one or more methods to modify the behavior of the backing iterator as desired per the decorator pattern.

default method warning: This class forwards calls to only some default methods. Specifically, it forwards calls only for methods that existed before default methods were introduced. For newer methods, like forEachRemaining, it inherits their default implementations. When those implementations invoke methods, they invoke methods on the ForwardingListIterator.

Since:

2.0

Author:

Mike Bostock

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ForwardingListIterator() Constructor for use by subclasses.

Method Summary

Modifier and Type	Method and Description
void	add(E element)
protected abstract ListIterator<E>	delegate() Returns the backing delegate instance that methods are forwarded to.
boolean	hasPrevious()
int	nextIndex()
E	previous()
int	previousIndex()
void	set(E element)

Methods inherited from class com.google.common.collect.ForwardingIterator

hasNext, next, remove

Methods inherited from class com.google.common.collect.ForwardingObject

toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.ListIterator

hasNext, next, remove

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

ForwardingListIterator

protected ForwardingListIterator()

Constructor for use by subclasses.

Method Detail

delegate

protected abstract ListIterator<E> delegate()

Description copied from class: ForwardingObject

Returns the backing delegate instance that methods are forwarded to. Abstract subclasses generally override this method with an abstract method that has a more specific return type, such as ForwardingSet.delegate(). Concrete subclasses override this method to supply the instance being decorated.

Specified by:

delegate in class ForwardingIterator<E>

add

public void add(E element)

Specified by:

add in interface ListIterator<E>

hasPrevious

public boolean hasPrevious()

Specified by:

hasPrevious in interface ListIterator<E>

nextIndex

public int nextIndex()

Specified by:

nextIndex in interface ListIterator<E>

previous

public E previous()

Specified by:

previous in interface ListIterator<E>

previousIndex

public int previousIndex()

Specified by:

previousIndex in interface ListIterator<E>

set

public void set(E element)

Specified by:

set in interface ListIterator<E>