Here you can find the source of instanceOf(Object o, Class> c)
public static boolean instanceOf(Object o, Class<?> c)
//package com.java2s; /******************************************************************************* * The MIT License (MIT)//from w ww. j a v a2s.c o m * * Copyright (c) 2016 Dalibor Drgo? <emptychannelmc@gmail.com> * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. ******************************************************************************/ public class Main { public static boolean instanceOf(Object o, Class<?> c) { if (o == null || c == null) { return false; } return c.isAssignableFrom(o.getClass()); } public static boolean instanceOf(Class<?> o, Class<?> c) { if (o == null || c == null) { return false; } return c.isAssignableFrom(o); } public static Class<?> getClass(String name) throws Throwable { return (Class<?>) Class.forName(name); } }