将集合转换成指定分隔符和前后缀的字符串

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public static String collectionToDelimitedString(Collection<?> coll, String delim, String prefix, String suffix) {     if (CollectionUtils.isEmpty(coll)) {         return "";     }     StringBuilder sb = new StringBuilder();     Iterator it = coll.iterator();     while (it.hasNext()) {         sb.append(prefix).append(it.next()).append(suffix);         if (it.hasNext())             ;         sb.append(delim);     }       return sb.toString(); }