Package com.google.common.collect
Class ForwardingListIterator<E extends @Nullable java.lang.Object>
- java.lang.Object
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- com.google.common.collect.ForwardingObject
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- com.google.common.collect.ForwardingIterator<E>
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- com.google.common.collect.ForwardingListIterator<E>
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- All Implemented Interfaces:
java.util.Iterator<E>
,java.util.ListIterator<E>
@GwtCompatible public abstract class ForwardingListIterator<E extends @Nullable java.lang.Object> extends ForwardingIterator<E> implements java.util.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 somedefault
methods. Specifically, it forwards calls only for methods that existed beforedefault
methods were introduced. For newer methods, likeforEachRemaining
, it inherits their default implementations. When those implementations invoke methods, they invoke methods on theForwardingListIterator
.- Since:
- 2.0
- Author:
- Mike Bostock
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Constructor Summary
Constructors Modifier Constructor Description protected
ForwardingListIterator()
Constructor for use by subclasses.
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description void
add(E element)
protected abstract java.util.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)
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Methods inherited from class com.google.common.collect.ForwardingIterator
hasNext, next, remove
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Methods inherited from class com.google.common.collect.ForwardingObject
toString
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Constructor Detail
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ForwardingListIterator
protected ForwardingListIterator()
Constructor for use by subclasses.
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Method Detail
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delegate
protected abstract java.util.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 asForwardingSet.delegate()
. Concrete subclasses override this method to supply the instance being decorated.- Specified by:
delegate
in classForwardingIterator<E extends @Nullable java.lang.Object>
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hasPrevious
public boolean hasPrevious()
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nextIndex
public int nextIndex()
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previous
@CanIgnoreReturnValue public E previous()
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previousIndex
public int previousIndex()
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