get Parameterized Superclass - Java Reflection

Java examples for Reflection:Generic

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Description

get Parameterized Superclass

Demo Code

/*// w  w w . j  ava2 s .c om
 * Licensed to the Indoqa Software Design und Beratung GmbH (Indoqa) under
 * one or more contributor license agreements. See the NOTICE file distributed
 * with this work for additional information regarding copyright ownership.
 * Indoqa 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.
 */
//package com.java2s;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

public class Main {
    private static ParameterizedType getParameterizedSuperclass(
            Class<?> type) {
        Class<?> currentClass = type;

        while (true) {
            Type genericSuperclass = currentClass.getGenericSuperclass();

            if (genericSuperclass instanceof ParameterizedType) {
                return (ParameterizedType) genericSuperclass;
            }

            if (genericSuperclass instanceof Class) {
                currentClass = (Class<?>) genericSuperclass;
                continue;
            }

            if (genericSuperclass == null) {
                return null;
            }
        }
    }
}

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