Here you can find the source of getWrapperClassForPrimitive(Class primitiveClass)
public static Class getWrapperClassForPrimitive(Class primitiveClass)
//package com.java2s; /*/*from w w w . ja va 2s . c o m*/ * Bristleback Websocket Framework - Copyright (c) 2010-2013 http://bristleback.pl * --------------------------------------------------------------------------- * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by the * Free Software Foundation; either version 3 of the License, or (at your * option) any later version. * This library 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. * You should have received a copy of the GNU Lesser General Public License along * with this program; if not, see <http://www.gnu.org/licenses/lgpl.html>. * --------------------------------------------------------------------------- */ import java.util.HashMap; import java.util.Map; public class Main { private static final Map<Class, Class> PRIMITIVE_TO_WRAPPERS_MAP = new HashMap<Class, Class>(); public static Class getWrapperClassForPrimitive(Class primitiveClass) { return PRIMITIVE_TO_WRAPPERS_MAP.get(primitiveClass); } }