Here you can find the source of toStringMap( Map
public static <E extends Enum<E>, T> Map<String, T> toStringMap( Map<E, T> enumMap)
//package com.java2s; /**//from w ww . j a va 2s .co m * Copyright (C) 2013 * by 52 North Initiative for Geospatial Open Source Software GmbH * * Contact: Andreas Wytzisk * 52 North Initiative for Geospatial Open Source Software GmbH * Martin-Luther-King-Weg 24 * 48155 Muenster, Germany * info@52north.org * * This program is free software; you can redistribute and/or modify it under * the terms of the GNU General Public License version 2 as published by the * Free Software Foundation. * * This program is distributed WITHOUT ANY WARRANTY; even without 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 * this program (see gnu-gpl v2.txt). If not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA or * visit the Free Software Foundation web page, http://www.fsf.org. */ import java.util.HashMap; import java.util.Map; public class Main { public static <E extends Enum<E>, T> Map<String, T> toStringMap( Map<E, T> enumMap) { Map<String, T> map = new HashMap<String, T>(enumMap.size(), 1f); for (E e : enumMap.keySet()) { map.put(e.name(), enumMap.get(e)); } return map; } }