Here you can find the source of instanceOf(Class> beanClass, Object element)
public static boolean instanceOf(Class<?> beanClass, Object element)
//package com.java2s; /******************************************************************************* * Copyright (c) 2011 Google, Inc.//ww w .ja v a 2 s .c o m * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Google, Inc. - initial API and implementation *******************************************************************************/ public class Main { public static boolean instanceOf(Class<?> beanClass, Object element) { return element != null && beanClass.isAssignableFrom(element.getClass()); } }