Here you can find the source of newInstance(String className, Class cls)
| Parameter | Description |
|---|---|
| className | a parameter |
| cls | a parameter |
| Parameter | Description |
|---|---|
| Exception | an exception |
public static Object newInstance(String className, Class<?> cls) throws Exception
//package com.java2s; /*/*from w ww. j av a 2s. c om*/ * $Id$ * * Copyright (C) 2003-2015 JNode.org * * This library 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 2.1 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. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library; If not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ public class Main { /** * @param className * @param cls * @return * @throws Exception */ public static Object newInstance(String className, Class<?> cls) throws Exception { Class<?> clazz = Class.forName(className); Object instance = clazz.newInstance(); if ((instance != null) && !cls.isAssignableFrom(instance.getClass())) throw new IllegalArgumentException(className + " is not an instanceof " + cls.getName()); return instance; } }