Java tutorial
//package com.java2s; import java.util.ArrayList; public class Main { public static String getCommaSeparatedStringFromArray(ArrayList list) { StringBuilder result = new StringBuilder(); for (int i = 0; i < list.size(); i++) { result.append(list.get(i)); result.append(","); } return result.length() > 0 ? result.substring(0, result.length() - 1) : ""; } }