Mega Code Archive
An array iterator
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/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
import java.io.Serializable;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* An array iterator.
*
* @version <tt>$Revision: 2800 $</tt>
* @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
*/
@SuppressWarnings("unchecked")
public class ArrayIterator implements Iterator, Serializable, Cloneable {
/** The serialVersionUID */
private static final long serialVersionUID = -6604583440222021075L;
/** Array to iterate over. */
protected final Object[] array;
/** The current position in the array. */
protected int index;
/**
* Construct an ArrayIterator.
*
* @param array
* The array to iterate over.
*/
public ArrayIterator(final Object[] array) {
this.array = array;
}
/**
* Returns true if there are more elements in the iteration.
*
* @return True if there are more elements in the iteration.
*/
public boolean hasNext() {
return index < array.length;
}
/**
* Returns the next element in the iteration.
*
* @return The next element in the iteration.
*
* @throws NoSuchElementException
* The are no more elements available.
*/
public Object next() {
if (!hasNext())
throw new NoSuchElementException();
return array[index++];
}
/**
* Unsupported.
*
* @throws UnsupportedOperationException
*/
public void remove() {
throw new UnsupportedOperationException();
}
/**
* Returns a shallow cloned copy of this object.
*
* @return A shallow cloned copy of this object.
*/
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException e) {
throw new InternalError();
}
}
}
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