Here you can find the source of toString(Map
public static String toString(Map<String, String> params)
//package com.java2s; /* /*from www . j a va 2s .c o m*/ * ReActions, Minecraft bukkit plugin * (c)2012-2014, fromgate, fromgate@gmail.com * http://dev.bukkit.org/server-mods/reactions/ * * This file is part of ReActions. * * ReActions is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * ReActions is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with ReActions. If not, see <http://www.gnorg/licenses/>. * */ import java.util.Map; public class Main { public static String toString(Map<String, String> params) { String str = ""; for (String key : params.keySet()) str += key + "[" + params.get(key) + "] "; return str.isEmpty() ? "empty" : str; } }