Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

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

public class Main {
    public static Type[] getGenericType(Class<?> clazz, Class<?> interfaceClazz) {
        Type st = clazz.getGenericSuperclass();
        Type[] ret = getActualTypeArguments(interfaceClazz, st);

        if (ret != null)
            return ret;

        for (Type t : clazz.getGenericInterfaces()) {
            ret = getActualTypeArguments(interfaceClazz, t);
            if (ret != null)
                return ret;
        }

        Class<?> s = clazz.getSuperclass();
        if (s == null || clazz.equals(s.getClass()))
            return new Type[0];

        return getGenericType(s, interfaceClazz);
    }

    private static Type[] getActualTypeArguments(Class<?> type, Type t) {
        if (t != null && t instanceof ParameterizedType) {
            ParameterizedType pt = (ParameterizedType) t;
            if (pt.getRawType().equals(type))
                return ((ParameterizedType) t).getActualTypeArguments();
        }
        return null;
    }
}