Java tutorial
//package com.java2s; public class Main { public static String join(Object... objs) { if (objs == null) return ""; StringBuffer s = new StringBuffer(); for (int i = 0, n = objs.length; i < n; i++) { s.append(objs[i]); if (i != n - 1) s.append(","); } return s.toString(); } public static String join(int[] objs) { if (objs == null) return ""; StringBuffer s = new StringBuffer(); for (int i = 0, n = objs.length; i < n; i++) { s.append(objs[i]); if (i != n - 1) s.append(","); } return s.toString(); } public static String join(long[] objs) { if (objs == null) return ""; StringBuffer s = new StringBuffer(); for (int i = 0, n = objs.length; i < n; i++) { s.append(objs[i]); if (i != n - 1) s.append(","); } return s.toString(); } }