org.apache.commons.collections.iterators
Class EmptyIterator

java.lang.Object
  |
  +--org.apache.commons.collections.iterators.AbstractEmptyIterator
        |
        +--org.apache.commons.collections.iterators.EmptyIterator

All Implemented Interfaces:

java.util.Iterator

public final class EmptyIterator

extends org.apache.commons.collections.iterators.AbstractEmptyIterator

implements java.util.Iterator

Provides an implementation of an empty iterator.

This class provides an implementation of an empty 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: 1.1.2.2 $ $Date: 2004/05/22 11:54:53 $

Author:

Stephen Colebourne

Field Summary

static java.util.Iterator

INSTANCE Singleton instance of the iterator.

Method Summary

void	add(java.lang.Object obj)
boolean	hasNext()
boolean	hasPrevious()
java.lang.Object	next()
int	nextIndex()
java.lang.Object	previous()
int	previousIndex()
void	remove()
void	set(java.lang.Object obj)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

hasNext, next, remove

Field Detail

INSTANCE

public static final java.util.Iterator INSTANCE

Singleton instance of the iterator.

Since:

Commons Collections 2.1.1 and 3.1

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()