Here you can find the source of forName(String className)
public static <T> Class<T> forName(String className) throws ClassNotFoundException
//package com.java2s; /*//from w ww . j av a2 s .c o m * Copyright 2007-2012 Jiemamy Project and the Others. * Created on 2009/01/29 * * This file is part of Jiemamy. * * 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. */ public class Main { public static <T> Class<T> forName(String className) throws ClassNotFoundException { return forName(className, Thread.currentThread().getContextClassLoader()); } @SuppressWarnings("unchecked") public static <T> Class<T> forName(String className, ClassLoader loader) throws ClassNotFoundException { return (Class<T>) Class.forName(className, true, loader); } }