scan .class files or jar file to reflection

In java project, I define a generic class

public class Test<T>

and a subclass

public class SubClass extends Test<Person> 

My question is how to scan code to find out which class is inherited from the Test, and the type T. As I know, the type T will be erased at runtime.

any method that we can do as that in .net(code as below)？

public static void RegisterVadas(Container container, params Assembly[] assemblies)
        {
            assemblies = assemblies.Distinct().ToArray();
            foreach (var assembly in assemblies)
            {
                foreach (var vada in assembly.GetTypes()
                .Where(t => t.IsOrHasGenericInterfaceTypeOf(typeof(IVada<>))))
                {
                    RegisterVada(container, vada);
                }
            }
        }