org.jtiger.framework
Interface SequenceIterator<E>

All Superinterfaces:

Iterator<E>, Positionable

public interface SequenceIterator<E>
extends Positionable, Iterator<E>

An iterator of a Sequence that permits bidirectional traversal.

Version:

2.1
Build Number 0376
Build Time 2006-07-28 01:50.16.218

Author:

Tony Morris

See Also:

Sequence

Method Summary

boolean	hasPrevious() Returns true if this iterator has a previous element that can be retrieved, false otherwise.
E	previous() Returns the previous element from this iterator.

Methods inherited from interface org.jtiger.framework.Positionable

getPosition

Methods inherited from interface java.util.Iterator

hasNext, next, remove

Method Detail

hasPrevious

boolean hasPrevious()

Returns true if this iterator has a previous element that can be retrieved, false otherwise.

Returns:

true if this iterator has a previous element that can be retrieved, false otherwise.

previous

E previous()
           throws NoSuchElementException

Returns the previous element from this iterator.

Returns:

The previous element from this iterator.

Throws:

NoSuchElementException - If there is no previous element in this iterator. It is guaranteed that if hasPrevious() has returned true, then this exception will not be thrown. Conversely, if hasPrevious() has returned false, then this exception will certainly be thrown.