org.apache.commons.collections.list

Class TreeList.TreeListIterator

java.lang.Object

org.apache.commons.collections.list.TreeList.TreeListIterator

All Implemented Interfaces:

java.util.Iterator, java.util.ListIterator, OrderedIterator

Enclosing class:

TreeList

static class TreeList.TreeListIterator
extends java.lang.Object
implements java.util.ListIterator, OrderedIterator

A list iterator over the linked list.

Field Summary

Fields

Modifier and Type	Field and Description
protected TreeList.AVLNode	current Cache of the last node that was returned by next() or previous().
protected int	currentIndex The index of the last node that was returned.
protected int	expectedModCount The modification count that the list is expected to have.
protected TreeList.AVLNode	next Cache of the next node that will be returned by next().
protected int	nextIndex The index of the next node to be returned.
protected TreeList	parent The parent list

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TreeListIterator(TreeList parent, int fromIndex) Create a ListIterator for a list.

Method Summary

Modifier and Type	Method and Description
void	add(java.lang.Object obj)
protected void	checkModCount() Checks the modification count of the list is the value that this object expects.
boolean	hasNext()
boolean	hasPrevious() Checks to see if there is a previous element that can be iterated to.
java.lang.Object	next()
int	nextIndex()
java.lang.Object	previous() Gets the previous element from the collection.
int	previousIndex()
void	remove()
void	set(java.lang.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 Detail

parent

protected final TreeList parent

The parent list

next

protected TreeList.AVLNode next

Cache of the next node that will be returned by next().

nextIndex

protected int nextIndex

The index of the next node to be returned.

current

protected TreeList.AVLNode current

Cache of the last node that was returned by next() or previous().

currentIndex

protected int currentIndex

The index of the last node that was returned.

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 Detail

TreeListIterator

protected TreeListIterator(TreeList parent,
                           int fromIndex)
                    throws java.lang.IndexOutOfBoundsException

Create a ListIterator for a list.

Parameters:

parent - the parent list

fromIndex - the index to start at

Throws:

java.lang.IndexOutOfBoundsException

Method Detail

checkModCount

protected void checkModCount()

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

Throws:

java.util.ConcurrentModificationException - If the list's modification count isn't the value that was expected.

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator

Specified by:

hasNext in interface java.util.ListIterator

next

public java.lang.Object next()

Specified by:

next in interface java.util.Iterator

Specified by:

next in interface java.util.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 java.util.ListIterator

Specified by:

hasPrevious in interface OrderedIterator

Returns:

true if the iterator has a previous element

previous

public java.lang.Object previous()

Description copied from interface: OrderedIterator

Gets the previous element from the collection.

Specified by:

previous in interface java.util.ListIterator

Specified by:

previous in interface OrderedIterator

Returns:

the previous element in the iteration

nextIndex

public int nextIndex()

Specified by:

nextIndex in interface java.util.ListIterator

previousIndex

public int previousIndex()

Specified by:

previousIndex in interface java.util.ListIterator

remove

public void remove()

Specified by:

remove in interface java.util.Iterator

Specified by:

remove in interface java.util.ListIterator

set

public void set(java.lang.Object obj)

Specified by:

set in interface java.util.ListIterator

add

public void add(java.lang.Object obj)

Specified by:

add in interface java.util.ListIterator