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 Description
    int back​(int n)
    Moves back for the given number of elements.
    java.lang.Object clone()  
    void forEachRemaining​(java.util.function.Consumer<? super K> action)  
    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
  • Method Details

    • 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()
    • forEachRemaining

      public void forEachRemaining​(java.util.function.Consumer<? super K> action)
      Specified by:
      forEachRemaining in interface java.util.Iterator<K>
    • clone

      public java.lang.Object clone()