Class EmptyIterator<E>
- java.lang.Object
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- org.apache.commons.collections4.iterators.AbstractEmptyIterator<E>
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- org.apache.commons.collections4.iterators.EmptyIterator<E>
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- All Implemented Interfaces:
java.util.Iterator<E>
,ResettableIterator<E>
public class EmptyIterator<E> extends AbstractEmptyIterator<E> implements ResettableIterator<E>
Provides an implementation of an empty iterator.This class provides an implementation of an empty 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
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Field Summary
Fields Modifier and Type Field Description static java.util.Iterator
INSTANCE
Singleton instance of the iterator.static ResettableIterator
RESETTABLE_INSTANCE
Singleton instance of the iterator.
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Constructor Summary
Constructors Modifier Constructor Description protected
EmptyIterator()
Constructor.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static <E> java.util.Iterator<E>
emptyIterator()
Get a typed empty iterator instance.static <E> ResettableIterator<E>
resettableEmptyIterator()
Get a typed resettable empty iterator instance.-
Methods inherited from class org.apache.commons.collections4.iterators.AbstractEmptyIterator
add, hasNext, hasPrevious, next, nextIndex, previous, previousIndex, remove, reset, set
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.commons.collections4.ResettableIterator
reset
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Field Detail
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RESETTABLE_INSTANCE
public static final ResettableIterator RESETTABLE_INSTANCE
Singleton instance of the iterator.- Since:
- 3.1
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INSTANCE
public static final java.util.Iterator INSTANCE
Singleton instance of the iterator.- Since:
- 2.1.1 and 3.1
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Method Detail
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resettableEmptyIterator
public static <E> ResettableIterator<E> resettableEmptyIterator()
Get a typed resettable empty iterator instance.- Type Parameters:
E
- the element type- Returns:
- ResettableIterator<E>
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emptyIterator
public static <E> java.util.Iterator<E> emptyIterator()
Get a typed empty iterator instance.- Type Parameters:
E
- the element type- Returns:
- Iterator<E>
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