Java Reflection Generic Parameter getGenericParameterTypes(final Type type)

Description

get Generic Parameter Types

License

Apache License

Declaration

public static Type[] getGenericParameterTypes(final Type type) 

Method Source Code

//package com.java2s;
/*//from   w ww  .j a  v a2 s . c  o  m
 * Copyright 2015-2016 the original author or authors.
 *
 * 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.GenericArrayType;

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

public class Main {
    protected static final Type[] EMPTY_TYPES = new Type[0];

    public static Type[] getGenericParameterTypes(final Type type) {
        if (ParameterizedType.class.isInstance(type)) {
            return ParameterizedType.class.cast(type)
                    .getActualTypeArguments();
        }
        if (GenericArrayType.class.isInstance(type)) {
            return getGenericParameterTypes(GenericArrayType.class.cast(
                    type).getGenericComponentType());
        }
        return EMPTY_TYPES;
    }
}

Related

1. getGenericParameter(final Type type, final int index)
2. getGenericParameterList(Type type)
3. getGenericParameters(final Type type)
4. getGenericParameterType(Method method, int paramIdx)
5. getGenericParameterType(Type type, int index)
6. getGenericParameterTypes(Method m)
7. getGenericParameterTypes(Type t)
8. getGenericParamType(Type type)
9. getGenericParamType(Type type)