org.apache.commons.collections.list

## Class CursorableLinkedList.Cursor

- java.lang.Object
- - org.apache.commons.collections.list.AbstractLinkedList.LinkedListIterator
  - - org.apache.commons.collections.list.CursorableLinkedList.Cursor

- All Implemented Interfaces:
    Iterator, ListIterator, OrderedIterator
  Direct Known Subclasses:
    CursorableLinkedList.SubCursor
  Enclosing class:
    CursorableLinkedList

      public static class CursorableLinkedList.Cursor
      extends AbstractLinkedList.LinkedListIterator

  An extended `ListIterator` that allows concurrent changes to the underlying list.

- - ### Field Summary

    - ### Fields inherited from class org.apache.commons.collections.list.AbstractLinkedList.LinkedListIterator

      `current, expectedModCount, next, nextIndex, parent`

  - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `CursorableLinkedList.Cursor(CursorableLinkedList parent, int index)` Constructs a new cursor.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `add(Object obj)` Adds an object to the list.
    `protected void` | `checkModCount()` Override superclass modCount check, and replace it with our valid flag.
    `void` | `close()` Mark this cursor as no longer being needed.
    `int` | `nextIndex()` Gets the index of the next element to be returned.
    `protected void` | `nodeChanged(AbstractLinkedList.Node node)` Handle event from the list when a node has changed.
    `protected void` | `nodeInserted(AbstractLinkedList.Node node)` Handle event from the list when a node has been added.
    `protected void` | `nodeRemoved(AbstractLinkedList.Node node)` Handle event from the list when a node has been removed.
    `void` | `remove()` Removes the item last returned by this iterator.

    - ### Methods inherited from class org.apache.commons.collections.list.AbstractLinkedList.LinkedListIterator

      `getLastNodeReturned, hasNext, hasPrevious, next, previous, previousIndex, set`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### CursorableLinkedList.Cursor

          protected CursorableLinkedList.Cursor(CursorableLinkedList parent,
                                     int index)

      Constructs a new cursor.
      Parameters:
        `index` - the index to start from

  - ### Method Detail

    - #### remove

          public void remove()

      Removes the item last returned by this iterator.

      There may have been subsequent alterations to the list since you obtained this item, however you can still remove it. You can even remove it if the item is no longer in the main list. However, you can't call this method on the same iterator more than once without calling next() or previous().

      Specified by:
        `remove` in interface `Iterator`
      Specified by:
        `remove` in interface `ListIterator`
      Overrides:
        `remove` in class `AbstractLinkedList.LinkedListIterator`
      Throws:
        `IllegalStateException` - if there is no item to remove

    - #### add

          public void add(Object obj)

      Adds an object to the list. The object added here will be the new 'previous' in the iterator.
      Specified by:
        `add` in interface `ListIterator`
      Overrides:
        `add` in class `AbstractLinkedList.LinkedListIterator`
      Parameters:
        `obj` - the object to add

    - #### nextIndex

          public int nextIndex()

      Gets the index of the next element to be returned.
      Specified by:
        `nextIndex` in interface `ListIterator`
      Overrides:
        `nextIndex` in class `AbstractLinkedList.LinkedListIterator`
      Returns:
        the next index

    - #### nodeChanged

          protected void nodeChanged(AbstractLinkedList.Node node)

      Handle event from the list when a node has changed.
      Parameters:
        `node` - the node that changed

    - #### nodeRemoved

          protected void nodeRemoved(AbstractLinkedList.Node node)

      Handle event from the list when a node has been removed.
      Parameters:
        `node` - the node that was removed

    - #### nodeInserted

          protected void nodeInserted(AbstractLinkedList.Node node)

      Handle event from the list when a node has been added.
      Parameters:
        `node` - the node that was added

    - #### checkModCount

          protected void checkModCount()

      Override superclass modCount check, and replace it with our valid flag.
      Overrides:
        `checkModCount` in class `AbstractLinkedList.LinkedListIterator`

    - #### close

          public void close()

      Mark this cursor as no longer being needed. Any resources associated with this cursor are immediately released. In previous versions of this class, it was mandatory to close all cursor objects to avoid memory leaks. It is no longer necessary to call this close method; an instance of this class can now be treated exactly like a normal iterator.

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