net.datastructures
Class PositionIterator

java.lang.Object
  net.datastructures.PositionIterator

All Implemented Interfaces:

Iterator

public class PositionIterator

extends Object

implements Iterator

A simple iterator class for lists. The positions of a list are returned by this iterator. No copy of the list is made, so any changes to the list are reflected in the iterator.

Author:

Michael Goodrich, Eric Zamore

Field Summary

protected Position	cur
protected List	list

Constructor Summary

PositionIterator()

PositionIterator(List L)
Creates an iterator over the given list.

Method Summary

boolean	hasNext() Returns whether the iterator has a next object.
Object	next() Returns the next object in the iterator.
void	remove() Throws an UnsupportedOperationException in all cases, because removal is not a supported operation in this iterator.

Methods inherited from class java.lang.Object

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

Field Detail

list

protected List list

cur

protected Position cur

Constructor Detail

PositionIterator

public PositionIterator()

PositionIterator

public PositionIterator(List L)

Creates an iterator over the given list.

Method Detail

hasNext

public boolean hasNext()

Returns whether the iterator has a next object.

Specified by:

hasNext in interface Iterator

next

public Object next()
            throws NoSuchElementException

Returns the next object in the iterator.

Specified by:

next in interface Iterator

Throws:

NoSuchElementException

remove

public void remove()
            throws UnsupportedOperationException

Throws an UnsupportedOperationException in all cases, because removal is not a supported operation in this iterator.

Specified by:

remove in interface Iterator

Throws:

UnsupportedOperationException