code: public static <T> Class<? super T> getNonSerializableSuperClass(Class<T> type) {
        Class<? super T> result = type;
        while(Serializable.class.isAssignableFrom(result)) {
           result = result.getSuperclass();
           if(result == null) {
              throw new Error("Bad class hierarchy: No non-serializable parents");
           }
        }
        return result;
  
     }
docs: Returns the first non-serializable superclass of a given class. According to Java Object
  Serialization Specification, objects read from a stream are initialized by calling an
  accessible no-arg constructor from the first non-serializable superclass in the object's
  hierarchy, allowing the state of non-serializable fields to be correctly initialized.
  
  @param <T> Type to instantiate
  @param type Serializable class for which the first non-serializable superclass is to be found
  @return The first non-serializable superclass of 'type'.
  @see java.io.Serializable