Java tutorial
//package com.java2s; import java.util.HashMap; public class Main { public static String wrappedContext(HashMap<String, String> context) { String _context = ""; if (context == null) { return ""; } for (String key : context.keySet()) { _context += key + ":" + context.get(key) + ","; } _context = _context.substring(0, _context.length() - 1); return _context; } }