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/*
* Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.util.collection;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* An object that iterates over the elements of an array
*
* @author Eike Stepper
* @since 3.0
*/
public class ArrayIterator<T> implements Iterator<T>
{
private T[] elements;
private int index;
private int lastElement;
public ArrayIterator(T[] elements)
{
this(elements, 0, elements.length - 1);
}
public ArrayIterator(T[] elements, int firstElement)
{
this(elements, firstElement, elements.length - 1);
}
public ArrayIterator(T[] elements, int firstElement, int lastElement)
{
this.elements = elements;
index = firstElement;
this.lastElement = lastElement;
}
public boolean hasNext()
{
return elements != null && index <= lastElement;
}
public T next() throws NoSuchElementException
{
if (!hasNext())
{
throw new NoSuchElementException();
}
return elements[index++];
}
/**
* Unsupported.
*
* @throws UnsupportedOperationException
* always
*/
public void remove()
{
throw new UnsupportedOperationException();
}
}
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