org.xins.common.collections
Class EnumerationIterator

java.lang.Object
  org.xins.common.collections.EnumerationIterator

All Implemented Interfaces:

Iterator

public final class EnumerationIterator

extends Object

implements Iterator

Iterator implementation that reads from an Enumeration.

Since:

XINS 1.0.0

Version:

$Revision: 1.9 $ $Date: 2006/08/28 09:12:32 $

Author:

Ernst de Haan

Constructor Summary

EnumerationIterator(Enumeration enumeration)
Constructs a new EnumerationIterator on top of the specified Enumeration.

Method Summary

boolean	hasNext() Checks if the iteration has more elements.
Object	next() Returns the next element in the iteration.
void	remove() Removes the last element returned by the iterator (unsupported operation).

Methods inherited from class java.lang.Object

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

Constructor Detail

EnumerationIterator

public EnumerationIterator(Enumeration enumeration)
                    throws IllegalArgumentException

Constructs a new EnumerationIterator on top of the specified Enumeration.

Parameters:

enumeration - the Enumeration object, cannot be null.

Throws:

IllegalArgumentException - if enumeration == null.

Method Detail

hasNext

public boolean hasNext()

Checks if the iteration has more elements.

Specified by:

hasNext in interface Iterator

Returns:

true if the iteration has more elements, false otherwise.

next

public Object next()
            throws NoSuchElementException

Returns the next element in the iteration.

Specified by:

next in interface Iterator

Returns:

the next element.

Throws:

NoSuchElementException - if the iteration has no more elements.

remove

public void remove()
            throws UnsupportedOperationException

Removes the last element returned by the iterator (unsupported operation).

The implementation of this method in class EnumerationIterator always throws an UnsupportedOperationException.

Specified by:

remove in interface Iterator

Throws:

UnsupportedOperationException - if this operation is not supported, which is the case for this implementation, so always.