it.unimi.dsi.fastutil.objects

Class ObjectIterators.EmptyIterator<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.ObjectIterators.EmptyIterator<K>

All Implemented Interfaces:

BidirectionalIterator<K>, ObjectBidirectionalIterator<K>, ObjectIterator<K>, ObjectListIterator<K>, java.io.Serializable, java.lang.Cloneable, java.util.Iterator<K>, java.util.ListIterator<K>

Enclosing class:

ObjectIterators

public static class ObjectIterators.EmptyIterator<K>
extends java.lang.Object
implements ObjectListIterator<K>, java.io.Serializable, java.lang.Cloneable

A class returning no elements and a type-specific iterator interface.

This class may be useful to implement your own in case you subclass a type-specific iterator.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
int	back(int n) Moves back for the given number of elements.
java.lang.Object	clone()
boolean	hasNext()
boolean	hasPrevious() Returns whether there is a previous element.
K	next()
int	nextIndex()
K	previous() Returns the previous element from the collection.
int	previousIndex()
int	skip(int n) Skips the given number of elements.

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectListIterator

add, remove, set

Methods inherited from interface java.util.Iterator

forEachRemaining

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<K>

Specified by:

hasNext in interface java.util.ListIterator<K>

hasPrevious

public boolean hasPrevious()

Description copied from interface: BidirectionalIterator

Returns whether there is a previous element.

Specified by:

hasPrevious in interface BidirectionalIterator<K>

Specified by:

hasPrevious in interface java.util.ListIterator<K>

Returns:

whether there is a previous element.

See Also:

ListIterator.hasPrevious()

next

public K next()

Specified by:

next in interface java.util.Iterator<K>

Specified by:

next in interface java.util.ListIterator<K>

previous

public K previous()

Description copied from interface: BidirectionalIterator

Returns the previous element from the collection.

Specified by:

previous in interface BidirectionalIterator<K>

Specified by:

previous in interface java.util.ListIterator<K>

Returns:

the previous element from the collection.

See Also:

ListIterator.previous()

nextIndex

public int nextIndex()

Specified by:

nextIndex in interface java.util.ListIterator<K>

previousIndex

public int previousIndex()

Specified by:

previousIndex in interface java.util.ListIterator<K>

skip

public int skip(int n)

Description copied from interface: ObjectBidirectionalIterator

Skips the given number of elements.

The effect of this call is exactly the same as that of calling Iterator.next() for n times (possibly stopping if Iterator.hasNext() becomes false).

Specified by:

skip in interface ObjectBidirectionalIterator<K>

Specified by:

skip in interface ObjectIterator<K>

Parameters:

n - the number of elements to skip.

Returns:

the number of elements actually skipped.

See Also:

Iterator.next()

back

public int back(int n)

Description copied from interface: ObjectBidirectionalIterator

Moves back for the given number of elements.

The effect of this call is exactly the same as that of calling BidirectionalIterator.previous() for n times (possibly stopping if BidirectionalIterator.hasPrevious() becomes false).

Specified by:

back in interface ObjectBidirectionalIterator<K>

Parameters:

n - the number of elements to skip back.

Returns:

the number of elements actually skipped.

See Also:

BidirectionalIterator.previous()

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object