Here you can find the source of newInstance(Class
@SuppressWarnings("unchecked") public static <T> T newInstance(Class<T> klass)
//package com.java2s; /*/*w w w . j av a 2 s.com*/ * Copyright 2010 Google Inc. * * 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 { /** * Creates a new instance of {@code klass}. The class must have a no-arg * constructor. The constructor may have any access modifier (for example, * private). */ @SuppressWarnings("unchecked") public static <T> T newInstance(Class<T> klass) { throw new RuntimeException("ReflectionHelper can't be used from web mode."); } }