Here you can find the source of classExists(String className)
private static final boolean classExists(String className)
//package com.java2s; /*/*from w w w . j a va 2s . c o m*/ * JBoss, Home of Professional Open Source * Copyright 2011, Red Hat Middleware LLC, and individual contributors * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * 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 { private static final boolean classExists(String className) { { try { Class.forName(className); return true; } catch (ClassNotFoundException exception) { return false; } } } private static final Class<?> forName(String className) { { try { return Class.forName(className); } catch (ClassNotFoundException exception) { return null; } } } }