Java tutorial
//package com.java2s; public class Main { public static String joinTasks(CharSequence delimiter, int[] ids) { StringBuilder sb = new StringBuilder(); boolean firstTime = true; for (int i = 0; i < ids.length; i++) { if (firstTime) { firstTime = false; } else { sb.append(delimiter); } sb.append(ids[i]); } return sb.toString(); } }