Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/util/SingleElementIterator.java
// $Id: eclipse-argo-codetemplates.xml 11347 2006-10-26 22:37:44Z linus $
// Copyright (c) 2007 The Regents of the University of California. All
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// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
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package org.argouml.util;

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

/**
 * A simple iterator wrapper for a single object. Designed for for use where the
 * API requires an iterator, but we've only got a single object and don't want
 * the overhead of creating a collection just so that we can iterate over its
 * single element.
 * 
 * @param <T> type of object to be iterated over
 * @author Tom Morris <tfmorris@gmail.com>
 */
public class SingleElementIterator<T> implements Iterator {

    private boolean done = false;
    private T target;
    
    public SingleElementIterator(T o) {
        target = o;
    }
    
    public boolean hasNext() {
        if (!done) {
            return true;
        } 
        return false;
    }

    public T next() {
        if (!done) {
            done = true;
            return target;
        }
        throw new NoSuchElementException();
    }

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

}
