获取泛型转过来的种

获取泛型转过来的类
public Class getGenericType(int index) {
  Type genType = getClass().getGenericSuperclass();
  if (!(genType instanceof ParameterizedType)) {
   return Object.class;
  }
  Type[] params = ((ParameterizedType) genType).getActualTypeArguments();
  if (index >= params.length || index < 0) {
   throw new RuntimeException("Index outof bounds");
  }
  if (!(params[index] instanceof Class)) {
   return Object.class;
  }
  return (Class) params[index];
}

例如：Class<T,E>;T为0索引