EDU.oswego.cs.dl.util.concurrent
Class CopyOnWriteArrayList.COWIterator

java.lang.Object
  EDU.oswego.cs.dl.util.concurrent.CopyOnWriteArrayList.COWIterator

All Implemented Interfaces:

Iterator, ListIterator

Enclosing class:

CopyOnWriteArrayList

protected static class CopyOnWriteArrayList.COWIterator

extends Object

implements ListIterator

Field Summary

protected Object[]	array Snapshot of the array
protected int	cursor Index of element to be returned by subsequent call to next.

Constructor Summary

protected

CopyOnWriteArrayList.COWIterator(Object[] elementArray, int initialCursor)

Method Summary

void	add(Object o) Not supported.
boolean	hasNext()
boolean	hasPrevious()
Object	next()
int	nextIndex()
Object	previous()
int	previousIndex()
void	remove() Not supported.
void	set(Object o) Not supported.

Methods inherited from class java.lang.Object

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

Field Detail

array

protected final Object[] array

Snapshot of the array

cursor

protected int cursor

Index of element to be returned by subsequent call to next.

Constructor Detail

CopyOnWriteArrayList.COWIterator

protected CopyOnWriteArrayList.COWIterator(Object[] elementArray,
                                           int initialCursor)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface ListIterator

hasPrevious

public boolean hasPrevious()

Specified by:

hasPrevious in interface ListIterator

next

public Object next()

Specified by:

next in interface ListIterator

previous

public Object previous()

Specified by:

previous in interface ListIterator

nextIndex

public int nextIndex()

Specified by:

nextIndex in interface ListIterator

previousIndex

public int previousIndex()

Specified by:

previousIndex in interface ListIterator

remove

public void remove()

Not supported. Always throws UnsupportedOperationException.

Specified by:

remove in interface ListIterator

Throws:

UnsupportedOperationException - remove is not supported by this Iterator.

set

public void set(Object o)

Not supported. Always throws UnsupportedOperationException.

Specified by:

set in interface ListIterator

Throws:

UnsupportedOperationException - set is not supported by this Iterator.

add

public void add(Object o)

Not supported. Always throws UnsupportedOperationException.

Specified by:

add in interface ListIterator

Throws:

UnsupportedOperationException - add is not supported by this Iterator.