Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * 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.
 */

import java.util.ArrayList;

import java.util.List;

public class Main {
    /**
     * <p>Gets a <code>List</code> of all interfaces implemented by the given
     * class and its superclasses.</p>
     *
     * <p>The order is determined by looking through each interface in turn as
     * declared in the source file and following its hierarchy up. Then each
     * superclass is considered in the same way. Later duplicates are ignored,
     * so the order is maintained.</p>
     *
     * @param cls  the class to look up, may be <code>null</code>
     * @return the <code>List</code> of interfaces in order,
     *  <code>null</code> if null input
     */
    public static List getAllInterfaces(Class cls) {
        if (cls == null) {
            return null;
        }

        List interfacesFound = new ArrayList();
        getAllInterfaces(cls, interfacesFound);

        return interfacesFound;
    }

    /**
     * Get the interfaces for the specified class.
     *
     * @param cls  the class to look up, may be <code>null</code>
     * @param interfacesFound the <code>Set</code> of interfaces for the class
     */
    private static void getAllInterfaces(Class cls, List interfacesFound) {
        while (cls != null) {
            Class[] interfaces = cls.getInterfaces();

            for (int i = 0; i < interfaces.length; i++) {
                if (!interfacesFound.contains(interfaces[i])) {
                    interfacesFound.add(interfaces[i]);
                    getAllInterfaces(interfaces[i], interfacesFound);
                }
            }

            cls = cls.getSuperclass();
        }
    }
}