edu.cmu.cs.coral.icf.plan_based.planners.pip
Class ReverseListIterator

java.lang.Object
  |
  +--edu.cmu.cs.coral.icf.plan_based.planners.pip.ReverseListIterator

public class ReverseListIterator

extends java.lang.Object

implements java.util.ListIterator

An iterator that iterates in reverse order.

Since:

ICF 0.0

Version:

$Id$

Field Summary

private java.util.ListIterator

listIter

Constructor Summary

ReverseListIterator(java.util.List list)
Construct a reverse iterator starting at the end of the list.

ReverseListIterator(java.util.ListIterator iter)
Construct a reverse iterator starting at the same location as this iterator.

Method Summary

void	add(java.lang.Object o) Inserts the object into the list.
boolean	hasNext() Checks if the iterator has a next element
boolean	hasPrevious() Checks if the iterator has a previous element
java.lang.Object	next() Gets the next element of the list in reverse order.
int	nextIndex() Gets the index of the element that will be returned by the next call to next.
java.lang.Object	previous() Gets the previous element of the list in reverse order.
int	previousIndex() Gets the index of the element that will be returned by the previous call to previous.
void	remove() Removes the element at the current position.
void	set(java.lang.Object o) Replaces the element at the current position with the given object.

Methods inherited from class java.lang.Object

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

Field Detail

listIter

private java.util.ListIterator listIter

Constructor Detail

ReverseListIterator

public ReverseListIterator(java.util.List list)

Construct a reverse iterator starting at the end of the list.

Parameters:

list - the list to construct the reverse iterator for

Since:

ICF 0.0

ReverseListIterator

public ReverseListIterator(java.util.ListIterator iter)

Construct a reverse iterator starting at the same location as this iterator.

Parameters:

iter - the iterator to reverse the direction of

Since:

ICF 0.0

Method Detail

add

public void add(java.lang.Object o)

Inserts the object into the list.

Specified by:

add in interface java.util.ListIterator

Parameters:

object - the object to insert

Since:

ICF 0.0

hasNext

public boolean hasNext()

Checks if the iterator has a next element

Specified by:

hasNext in interface java.util.ListIterator

Returns:

true if and only if the iterator has a next element

Since:

ICF 0.0

hasPrevious

public boolean hasPrevious()

Checks if the iterator has a previous element

Specified by:

hasPrevious in interface java.util.ListIterator

Returns:

true if and only if the iterator has a previous element

Since:

ICF 0.0

next

public java.lang.Object next()

Gets the next element of the list in reverse order.

Specified by:

next in interface java.util.ListIterator

Returns:

the next element in reverse order

Since:

ICF 0.0

nextIndex

public int nextIndex()

Gets the index of the element that will be returned by the next call to next.

Specified by:

nextIndex in interface java.util.ListIterator

Returns:

the index of the next element

Since:

ICF 0.0

previous

public java.lang.Object previous()

Gets the previous element of the list in reverse order.

Specified by:

previous in interface java.util.ListIterator

Returns:

the previous element in reverse order

Since:

ICF 0.0

previousIndex

public int previousIndex()

Gets the index of the element that will be returned by the previous call to previous.

Specified by:

previousIndex in interface java.util.ListIterator

Returns:

the index of the previous element

Since:

ICF 0.0

remove

public void remove()

Removes the element at the current position.

Specified by:

remove in interface java.util.ListIterator

Since:

ICF 0.0

set

public void set(java.lang.Object o)

Replaces the element at the current position with the given object.

Specified by:

set in interface java.util.ListIterator

Parameters:

o - the new value for this element

Since:

ICF 0.0