is Collection By Type - Android java.lang.reflect

Android examples for java.lang.reflect:Class

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Description

is Collection By Type

Demo Code

/*// www.j  a  v  a  2 s  .c  o m
 * Copyright 2014-2016 QuickAF
 *
 * 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.
 */
//package com.java2s;

import java.lang.reflect.Field;

import java.lang.reflect.ParameterizedType;

import java.util.Collection;

public class Main {

    @SuppressWarnings("rawtypes")
    public static final boolean isCollectionByType(Field field,
            Class<? extends Collection> collectionType, Class<?> type) {
        Class<?> fieldType = field.getType();
        if (collectionType.isAssignableFrom(fieldType)) {
            Class<?> first = (Class<?>) ((ParameterizedType) field
                    .getGenericType()).getActualTypeArguments()[0];
            return type.isAssignableFrom(first);
        } else {
            return false;
        }
    }
}

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