java.lang.Object

org.apache.commons.collections.list.AbstractLinkedList.LinkedListIterator

All Implemented Interfaces:: Iterator, ListIterator, OrderedIterator

Direct Known Subclasses:: AbstractLinkedList.LinkedSubListIterator, CursorableLinkedList.Cursor

Enclosing class:: AbstractLinkedList

protected static class AbstractLinkedList.LinkedListIterator extends Object implements ListIterator, OrderedIterator

A list iterator over the linked list.

Field Summary

Fields

Modifier and Type

Field

Description

protected AbstractLinkedList.Node

current

The last node that was returned by next() or previous().

protected int

expectedModCount

The modification count that the list is expected to have.

protected AbstractLinkedList.Node

next

The node that will be returned by next().

protected int

nextIndex

The index of next.

protected final AbstractLinkedList

parent

The parent list
Constructor Summary

Constructors

Modifier

Constructor

Description

protected

LinkedListIterator(AbstractLinkedList parent, int fromIndex)

Create a ListIterator for a list.
Method Summary

Modifier and Type

Method

Description

void

add(Object obj)

protected void

checkModCount()

Checks the modification count of the list is the value that this object expects.

protected AbstractLinkedList.Node

getLastNodeReturned()

Gets the last node returned.

boolean

hasNext()

boolean

hasPrevious()

Checks to see if there is a previous element that can be iterated to.

Object

next()

int

nextIndex()

Object

previous()

Gets the previous element from the collection.

int

previousIndex()

void

remove()

void

set(Object obj)

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

Field Details
- parent
  
  protected final AbstractLinkedList parent
  
  The parent list
- next
  
  protected AbstractLinkedList.Node next
  
  The node that will be returned by next(). If this is equal to AbstractLinkedList.header then there are no more values to return.
- nextIndex
  
  protected int nextIndex
  
  The index of next.
- current
  
  protected AbstractLinkedList.Node current
  
  The last node that was returned by next() or previous(). Set to null if next() or previous() haven't been called, or if the node has been removed with remove() or a new node added with add(Object). Should be accessed through getLastNodeReturned() to enforce this behaviour.
- expectedModCount
  
  protected int expectedModCount
  
  The modification count that the list is expected to have. If the list doesn't have this count, then a ConcurrentModificationException may be thrown by the operations.
Constructor Details
- LinkedListIterator
  
  protected LinkedListIterator(AbstractLinkedList parent, int fromIndex) throws IndexOutOfBoundsException
  
  Create a ListIterator for a list.
  
  Parameters:
  
  parent - the parent list
  
  fromIndex - the index to start at
  
  Throws:
  
  IndexOutOfBoundsException
Method Details
- checkModCount
  
  protected void checkModCount()
  
  Checks the modification count of the list is the value that this object expects.
  
  Throws:
  
  ConcurrentModificationException - If the list's modification count isn't the value that was expected.
- getLastNodeReturned
  
  protected AbstractLinkedList.Node getLastNodeReturned() throws IllegalStateException
  
  Gets the last node returned.
  
  Throws:
  
  IllegalStateException - If next() or previous() haven't been called, or if the node has been removed with remove() or a new node added with add(Object).
- hasNext
  
  public boolean hasNext()
  
  Specified by:
  
  hasNext in interface Iterator
  
  Specified by:
  
  hasNext in interface ListIterator
- next
  
  public Object next()
  
  Specified by:
  
  next in interface Iterator
  
  Specified by:
  
  next in interface ListIterator
- hasPrevious
  
  public boolean hasPrevious()
  
  Description copied from interface: OrderedIterator
  
  Checks to see if there is a previous element that can be iterated to.
  
  Specified by:
  
  hasPrevious in interface ListIterator
  
  Specified by:
  
  hasPrevious in interface OrderedIterator
  
  Returns:
  
  true if the iterator has a previous element
- previous
  
  public Object previous()
  
  Description copied from interface: OrderedIterator
  
  Gets the previous element from the collection.
  
  Specified by:
  
  previous in interface ListIterator
  
  Specified by:
  
  previous in interface OrderedIterator
  
  Returns:
  
  the previous element in the iteration
- nextIndex
  
  public int nextIndex()
  
  Specified by:
  
  nextIndex in interface ListIterator
- previousIndex
  
  public int previousIndex()
  
  Specified by:
  
  previousIndex in interface ListIterator
- remove
  
  public void remove()
  
  Specified by:
  
  remove in interface Iterator
  
  Specified by:
  
  remove in interface ListIterator
- set
  
  public void set(Object obj)
  
  Specified by:
  
  set in interface ListIterator
- add
  
  public void add(Object obj)
  
  Specified by:
  
  add in interface ListIterator

Class AbstractLinkedList.LinkedListIterator

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Iterator

Field Details

parent

next

nextIndex

current

expectedModCount

Constructor Details

LinkedListIterator

Method Details

checkModCount

getLastNodeReturned

hasNext

next

hasPrevious

previous

nextIndex

previousIndex

remove

set

add