Class EmptyIterator<E>
java.lang.Object
org.apache.commons.collections4.iterators.EmptyIterator<E>
- Type Parameters:
E
- the type of elements returned by this iterator.
- All Implemented Interfaces:
Iterator<E>
,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
Modifier and TypeFieldDescriptionstatic final Iterator
Singleton instance of the iterator.static final ResettableIterator
Singleton instance of the iterator. -
Constructor Summary
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Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface java.util.Iterator
forEachRemaining, hasNext, next, remove
Methods inherited from interface org.apache.commons.collections4.ResettableIterator
reset
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Field Details
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RESETTABLE_INSTANCE
Singleton instance of the iterator.- Since:
- 3.1
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INSTANCE
Singleton instance of the iterator.- Since:
- 2.1.1 and 3.1
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Constructor Details
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EmptyIterator
protected EmptyIterator()Constructs a new instance.
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Method Details
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emptyIterator
Gets a typed empty iterator instance.- Type Parameters:
E
- the element type- Returns:
- Iterator<E>
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resettableEmptyIterator
Gets a typed resettable empty iterator instance.- Type Parameters:
E
- the element type- Returns:
- ResettableIterator<E>
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add
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hasNext
public boolean hasNext() -
hasPrevious
public boolean hasPrevious() -
next
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nextIndex
public int nextIndex() -
previous
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previousIndex
public int previousIndex() -
remove
public void remove() -
reset
public void reset() -
set
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