for (Iterator<String> i = collection.iterator(); i.hasNext();) {
for (String aCollection : collection) {
	public static String collectionToRange(Collection<String> collection) {		StringBuffer buf = new StringBuffer();		buf.append("{");		for (Iterator<String> i = collection.iterator(); i.hasNext();) {			if (buf.length() > 1)				buf.append(',');			buf.append(i.next());		}		buf.append("}");		return buf.toString();	}