how to create an instance of "Serialization" without the implementaiton class on the classpath? : I'm writing a tool that need to get an instance of `java.io.Serializable` from a byte array.  
The difficulty is that the "real" class is not (and cannot be...) on the classpath (I will not explain why here..).  
The code below fails on `is.readObject()` with a `ClassNotFoundException` because the implementation class is not on the classpath  
Q:  
Is is possible to achieve this? by reflection? by using `Unsafe`? by using a sub class of `ClassLoader`? or...?

    byte[] data = ...
    try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(data));) {
       Object o = ois.readObject();
       Serializable s = (Serializable)o;
    }