Here you can find the source of newInstance(String className)
public static Object newInstance(String className) throws InstantiationException, IllegalAccessException, ClassNotFoundException
//package com.java2s; /*// ww w.j a va2 s . co m * Copyright 2007-2012 Jiemamy Project and the Others. * * 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 Object newInstance(String className) throws InstantiationException, IllegalAccessException, ClassNotFoundException { return forName(className).newInstance(); } public static Class<?> forName(String className) throws ClassNotFoundException { ClassLoader loader = Thread.currentThread().getContextClassLoader(); return Class.forName(className, true, loader); } }