JavaRegex替換完整單詞

應該還有更好的辦法，以下只為實現功能

/*<br /> * 完整替換字串，如：2dashu_16/2dashu_1)*100，只替換：2dashu_1，不會替換：2dashu_16<br /> * str:字串<br /> * old:要替換單詞<br /> * newWord:替換後單詞<br /> */<br />public static String completeReplace(String str,String old,String newWord){<br /> Pattern p = Pattern.compile(old + "([^_//d//w])");<br /> Matcher m2 = p.matcher(str);<br /> StringBuffer sb = new StringBuffer();<br /> while (m2.find()) {<br /> m2.appendReplacement(sb, newWord+m2.group(1));<br /> }<br /> m2.appendTail(sb);<br /> return sb.toString();<br />}