Java tutorial
//package com.java2s; import java.util.Map; public class Main { public static final String LINE_SEP = "\r\n"; public static final String EQUALS = "="; public static String parseFromMap(Map<String, String> mappy) { StringBuilder sb = new StringBuilder(); for (Map.Entry<String, String> e : mappy.entrySet()) { if (sb.length() > 0) { sb.append(LINE_SEP); } sb.append(e.getKey()).append(EQUALS).append(e.getValue()); } return sb.toString(); } }