Java tutorial
//package com.java2s; public class Main { public static String join(Object[] o, String flag) { StringBuffer str_buff = new StringBuffer(); for (int i = 0, len = o.length; i < len; i++) { str_buff.append(String.valueOf(o[i])); if (i < len - 1) str_buff.append(flag); } return str_buff.toString(); } }