com.tensegrity.generic.util
Class ArrayListChar.Iterator

java.lang.Object
  com.tensegrity.generic.util.ArrayListChar.Iterator

Direct Known Subclasses:

ArrayListChar.ListIterator

Enclosing class:

ArrayListChar

public class ArrayListChar.Iterator

extends java.lang.Object

ArrayListChar.Iterator provides a simple forware iterator with basic versioning. This versioning functionality will warn when the arraylist the iterator is associated with has been modified since the point in time when the iterator was instanciated. However this mechanism implemented by a simple counter is not sufficient for detecting shared-memory modifications done by concurrently executing threads. This is only possible to achieve by using synchronization constructs throughout the usage of the list/iterator pair, as the synchronization constructs are the only way of making sure that the independant working memory of each thread is flushed back into main memory.

Field Summary

protected int	frozen_stamp modification stamp value frozen at instanciation time of the iterator
protected int	pos current position of the iterator

Method Summary

boolean	hasNext() Tests whether there is a next element after the current element that the iterator points to.
char	next() Returns the previous element from the iterator.

Methods inherited from class java.lang.Object

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

Field Detail

pos

protected int pos

current position of the iterator

frozen_stamp

protected final int frozen_stamp

modification stamp value frozen at instanciation time of the iterator

Method Detail

hasNext

public boolean hasNext()

Tests whether there is a next element after the current element that the iterator points to.

Returns:

true if there is an element next after the current element.

Throws:

ListModifiedException - thrown if a modification of the array was detected.

next

public char next()

Returns the previous element from the iterator.

Returns:

the previous element

Throws:

ListModifiedException - thrown if a modification of the array was detected.