rp.util
Class TwoList.IteratorA

java.lang.Object
  |
  +--rp.util.TwoList.IteratorDefault
        |
        +--rp.util.TwoList.IteratorA

All Implemented Interfaces:

TwoList.Iterator

Enclosing class:

TwoList

protected static class TwoList.IteratorA

extends rp.util.TwoList.IteratorDefault

An implementation of the Iterator interface for A-lists.

Field Summary

protected TwoList	head
protected TwoList	node

Constructor Summary

protected

TwoList.IteratorA(TwoList node)

Method Summary

TwoList	getTwoList() Return the current element.
void	goNext() Moves to the next element.
void	goPrevious() Moves to the previous element.
boolean	hasNext() Tests if there is any next element.
boolean	hasPrevious() Tests if there is any previous element.
boolean	isReset() Tests if this iterator is set to the starting position.
void	reset() Return the iterator to the starting position.

Methods inherited from class java.lang.Object

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

Field Detail

head

protected TwoList head

node

protected TwoList node

Constructor Detail

TwoList.IteratorA

protected TwoList.IteratorA(TwoList node)

Method Detail

hasNext

public boolean hasNext()

Description copied from interface: TwoList.Iterator

Tests if there is any next element. Can't move the iterator forward unless there is.

Specified by:

hasNext in interface TwoList.Iterator

Specified by:

hasNext in class rp.util.TwoList.IteratorDefault

Returns:

if there is a next element.

goNext

public void goNext()

Description copied from interface: TwoList.Iterator

Moves to the next element. Illegal if there isn't a next element.

Specified by:

goNext in interface TwoList.Iterator

Specified by:

goNext in class rp.util.TwoList.IteratorDefault

hasPrevious

public boolean hasPrevious()

Description copied from interface: TwoList.Iterator

Tests if there is any previous element. Can't move the iterator backwards unless there is.

Specified by:

hasPrevious in interface TwoList.Iterator

Specified by:

hasPrevious in class rp.util.TwoList.IteratorDefault

Returns:

if there is a previous element.

goPrevious

public void goPrevious()

Description copied from interface: TwoList.Iterator

Moves to the previous element. Illegal if there isn't a previous element.

Specified by:

goPrevious in interface TwoList.Iterator

Specified by:

goPrevious in class rp.util.TwoList.IteratorDefault

reset

public void reset()

Description copied from interface: TwoList.Iterator

Return the iterator to the starting position. (From which one can either move forward to the first node or backwards to the last node).

Specified by:

reset in interface TwoList.Iterator

isReset

public boolean isReset()

Description copied from interface: TwoList.Iterator

Tests if this iterator is set to the starting position.

Specified by:

isReset in interface TwoList.Iterator

Returns:

if this iterator is set at the starting position

getTwoList

public TwoList getTwoList()

Description copied from interface: TwoList.Iterator

Return the current element. Illegal if isReset().

Specified by:

getTwoList in interface TwoList.Iterator

Returns:

the current element