Class AbstractEmptyMapIterator<K,V> 
java.lang.Object
org.apache.commons.collections4.iterators.AbstractEmptyMapIterator<K,V> 
- Type Parameters:
- K- the type of keys
- V- the type of mapped values
- All Implemented Interfaces:
- Iterator<K>,- ResettableIterator<K>
- Direct Known Subclasses:
- EmptyMapIterator,- EmptyOrderedMapIterator
Provides an implementation of an empty map iterator.
- Since:
- 4.0
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Constructor SummaryConstructors
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Method SummaryModifier and TypeMethodDescriptionvoidDeprecated.Will be removed in 5.0 without replacement.getKey()Always throws IllegalStateException.getValue()Always throws IllegalStateException.booleanhasNext()Always returns false, this iterator contains no elements.booleanAlways returns false, this iterator contains no elements.next()Always throws IllegalStateException, this iterator contains no elements.intAlways returns 0, this iterator contains no elements.previous()Always throws IllegalStateException, this iterator contains no elements.intAlways returns -1, this iterator contains no elements.voidremove()Always throws IllegalStateException, this iterator contains no elements.voidreset()Resets the iterator back to the position at which the iterator was created.voidAlways throws IllegalStateException, this iterator contains no elements.Always throws IllegalStateException.Methods inherited from class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface java.util.IteratorforEachRemaining
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Constructor Details- 
AbstractEmptyMapIteratorpublic AbstractEmptyMapIterator()Create a new AbstractEmptyMapIterator.
 
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Method Details- 
getKeyAlways throws IllegalStateException.- Returns:
- Always throws IllegalStateException.
- Throws:
- IllegalStateException- Always thrown.
 
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getValueAlways throws IllegalStateException.- Returns:
- Always throws IllegalStateException.
- Throws:
- IllegalStateException- Always thrown.
 
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setValueAlways throws IllegalStateException.- Parameters:
- ignored- ignored.
- Returns:
- Always throws IllegalStateException.
- Throws:
- IllegalStateException- Always thrown.
 
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addDeprecated.Will be removed in 5.0 without replacement.Always throws UnsupportedOperationException.- Parameters:
- ignored- ignore.
- Throws:
- UnsupportedOperationException- Always thrown.
 
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hasNext
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hasPreviouspublic boolean hasPrevious()Always returns false, this iterator contains no elements.- Returns:
- Always false.
 
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nextAlways throws IllegalStateException, this iterator contains no elements.- Specified by:
- nextin interface- Iterator<E>
- Returns:
- Always throws IllegalStateException.
- Throws:
- IllegalStateException- Always thrown.
 
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nextIndexpublic int nextIndex()Always returns 0, this iterator contains no elements.- Returns:
- Always returns 0.
 
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previousAlways throws IllegalStateException, this iterator contains no elements.- Returns:
- Always throws IllegalStateException.
- Throws:
- IllegalStateException- Always thrown.
 
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previousIndexpublic int previousIndex()Always returns -1, this iterator contains no elements.- Returns:
- Always returns -1.
 
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removepublic void remove()Always throws IllegalStateException, this iterator contains no elements.- Specified by:
- removein interface- Iterator<E>
- Throws:
- IllegalStateException- Always thrown.
 
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resetpublic void reset()Description copied from interface:ResettableIteratorResets the iterator back to the position at which the iterator was created.- Specified by:
- resetin interface- ResettableIterator<E>
 
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setAlways throws IllegalStateException, this iterator contains no elements.- Parameters:
- ignored- ignored.
- Throws:
- IllegalStateException- Always thrown.
 
 
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