Here you can find the source of getGenericParameterTypes(Type t)
public static Type[] getGenericParameterTypes(Type t)
//package com.java2s; /*-------------------------------------------------------------------------- * Copyright 2009 Taro L. Saito/*from w w w.j av a 2 s .c o m*/ * * 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.ParameterizedType; import java.lang.reflect.Type; public class Main { public static Type[] getGenericParameterTypes(Type t) { if (ParameterizedType.class.isInstance(t)) { ParameterizedType pt = ParameterizedType.class.cast(t); return pt.getActualTypeArguments(); } else return null; } }