stringutil.java

Sun公司Dream项目

/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the "License").  You may not use this file except
 * in compliance with the License.
 *
 * You can obtain a copy of the license at
 * http://www.opensource.org/licenses/cddl1.php
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * HEADER in each file and include the License file at
 * http://www.opensource.org/licenses/cddl1.php.  If 
 * applicable, add the following below this CDDL HEADER, 
 * with the fields enclosed by brackets "[]" replaced 
 * with your own identifying information: 
 * Portions Copyright [yyyy]
 * [name of copyright owner]
 */ 

/*
 * $(@)StringUtil.java $Revision: 1.1.1.1 $ $Date: 2006/03/15 13:12:10 $
 * 
 * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
 */
package com.sun.sjc.idtv.vod.server.comm;
import java.util.StringTokenizer;

/**
 * String utility class.
 */
public class StringUtil {

	/**
	 * Splits a string into an array of strings using the specified
	 * delimiter. Returns null if the string is null. Returns the
	 * original string into an array of size 1 if the delimiter is
	 * null or an empty string.
	 *
	 * @return An array of strings that were delimited by the specified
	 * delimiter.
	 * @param str String to be split.
	 * @param delimiter Separator string.
	 */
	public static String[] splitString(String str, String delimiter) {

		if (str == null)
			return null;

		String[] ret;
		if (delimiter == null || delimiter == "") {
			ret = new String[1];
			ret[0] = str.trim();
			return ret;
		}

		StringTokenizer st = new StringTokenizer(str, delimiter);
		ret = new String[st.countTokens()];
		for (int i = 0; i < ret.length; i++) {
			ret[i] = st.nextToken().trim();
		}
		return ret;
	}

}