StringUtil.java

/**
 * 
 * Funf: Open Sensing Framework
 * Copyright (C) 2010-2011 Nadav Aharony, Wei Pan, Alex Pentland.
 * Acknowledgments: Alan Gardner
 * Contact: nadav@media.mit.edu
 * 
 * This file is part of Funf.
 * 
 * Funf 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.
 * 
 * Funf 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 Funf. If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package edu.mit.media.funf.util;

import java.util.Collection;
import java.util.Iterator;

public class StringUtil {
	
	private StringUtil() {
		
	}


	/**
	 * Convenience function for joining strings using a delimeter
	 * @param strings
	 * @param delimeter
	 * @return
	 */
	public static String join(final Collection<?> strings, String delimeter) {
		if (delimeter == null) {
			delimeter = ",";
		}
		if (strings.isEmpty()) {
			return "";
		}
		StringBuffer joined = new StringBuffer();
		Iterator<?> stringIter = strings.iterator();
		joined.append(stringIter.next().toString());
		while (stringIter.hasNext()) {
			joined.append(delimeter);
			joined.append(stringIter.next().toString());
		}
		return joined.toString();
	}
}