OneElementIterator.java

/**
 * Copyright 2004-2016 Riccardo Solmi. All rights reserved.
 * This file is part of the Whole Platform.
 *
 * The Whole Platform 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 3 of the License, or
 * (at your option) any later version.
 *
 * The Whole Platform 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 the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
 */
package org.whole.lang.util;

import java.util.Iterator;
import java.util.NoSuchElementException;

/**
 * 
 */
public class OneElementIterator<T> implements Iterator<T> {
	private T fElement;
	
	public OneElementIterator(T element) {
		fElement = element;
	}
	
	public boolean hasNext() {
		return fElement != null;
	}

	public T next() {
		if (fElement != null) {
			T result= fElement;
			fElement= null;
			return result;
		}
		throw new NoSuchElementException();
	}

	public void remove() {
		throw new UnsupportedOperationException();
	}
}