Java Reflection Interface Get getDeclaredInterfaces(Class claz, Class... assignableClasses)

Description

Returns an array of all declared interfaces of desired class (super-classes comes an account).

License

Open Source License

Parameter

Parameter	Description
claz	The class to get all interfaces.

Declaration

@SuppressWarnings("unchecked")
public static List<Class<?>> getDeclaredInterfaces(Class claz,
        Class... assignableClasses) 

Method Source Code

//package com.java2s;
/*//from ww w .j  a va2 s  .c om
 * Copyright (c) 2008-2016, GigaSpaces Technologies, Inc. All Rights Reserved.
 *
 * 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.
 */

import java.util.ArrayList;

import java.util.List;

public class Main {
    /**
     * Returns an array of all declared interfaces of desired class (super-classes comes an
     * account). If <code>assignableClasses</code> is <code>null</code> all implemented interface
     * will be added to array, otherwise only <b>assignable</b> classes.
     *
     * @param claz The class to get all interfaces.
     **/
    @SuppressWarnings("unchecked")
    public static List<Class<?>> getDeclaredInterfaces(Class claz,
            Class... assignableClasses) {
        ArrayList<Class<?>> interfList = new ArrayList<Class<?>>();

        while (!claz.equals(Object.class)) {
            for (Class cl : claz.getInterfaces()) {
                /* append only assignable interfaces */
                if (assignableClasses.length > 0) {
                    for (Class assignClaz : assignableClasses) {
                        if (assignClaz.isAssignableFrom(cl))
                            interfList.add(cl);
                    }
                } else
                    interfList.add(cl);
            }

            claz = claz.getSuperclass();
        }

        return interfList;
    }
}

Related

1. getAllInterfaces(Object object)
2. getAllInterfaces(Set> searchInterfaces, Class clazz)
3. getAllInterfacesForClass(Class clazz)
4. getAllInterfacesNames(Class aClass)
5. getClassHierarchy(Class c, boolean includeInterfaces)
6. getImplementedInterfaceParents(Class clazz, Set classesResult)
7. getImplementedInterfaces(Class clazz)
8. getImplementedInterfaces(Class cl)
9. getInterfaceInstance(Class interfaceType)