Here you can find the source of getWrapper(Class> type)
public static Class<?> getWrapper(Class<?> type)
//package com.java2s; /**//from www .ja va2 s . c o m * Copyright (C) 2010 Mycila <mathieu.carbou@gmail.com> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.util.HashMap; import java.util.Map; public class Main { private static final Map<Class, Class> primitiveWrappers = new HashMap<Class, Class>(8); public static Class<?> getWrapper(Class<?> type) { return primitiveWrappers.get(type); } }