Java Reflection Generic Type from Field getGenericTypes(Field field)

Description

Returns the list of generic types associated to the provided field (if any).

License

Apache License

Parameter

Parameter	Description
field	the field instance to process.

Return

the list of generic types associated to the provided field (if any).

Declaration

public static Class[] getGenericTypes(Field field) 

Method Source Code

//package com.java2s;
/*//  w  ww . j  a va  2s . c o m
 * Copyright 2014, Stratio.
 *
 * 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.lang.reflect.Field;

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

public class Main {
    /**
     * Returns the list of generic types associated to the provided field (if any).
     *
     * @param field the field instance to process.
     * @return the list of generic types associated to the provided field (if any).
     */
    public static Class[] getGenericTypes(Field field) {
        try {
            ParameterizedType type = (ParameterizedType) field.getGenericType();
            Type[] types = type.getActualTypeArguments();

            Class<?>[] res = new Class<?>[types.length];

            for (int i = 0; i < types.length; i++) {
                res[i] = (Class<?>) types[i];
            }

            return res;

        } catch (ClassCastException e) {
            return new Class<?>[] { (Class<?>) field.getGenericType() };
        }
    }
}

Related

1. getGenericType(Field field)
2. getGenericType(Field field)
3. getGenericType(Type type, Type fieldType)
4. getGenericTypeArguments(final Field field)
5. getGenericTypeOfCollectionField(Field field)
6. getGenericTypes(Field field)
7. getGenericTypes(Field field)
8. getGenericTypes(Field field)
9. getGenericTypes(Field field)