Here you can find the source of toArray(Class
@SuppressWarnings("unchecked") private static <T> Class<T>[] toArray(Class<T> interfaceClass)
//package com.java2s; /**//from w w w.j ava2s. c o m * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 { @SuppressWarnings("unchecked") private static <T> Class<T>[] toArray(Class<T> interfaceClass) { // this method and it's usage is introduced to avoid compiler warnings // about the generic Class arrays in the case we've got only one single // Class to build a Proxy for return new Class[] { interfaceClass }; } }