For some reason, errors are occurring when serializing/deserializing B objects. Find the problem and fix it. The A class should not implement the Serializable and Externalizable interfaces. There is no error in the B class's signature :). There are no errors in the main method.
Find the bugs
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21 November 2021, 14:58
If you are having difficulty, don't be fooled by mislabeling. This task is very hard. Only 497 people have completed this task and the average number of attempts is >6. Definitely on the same difficulty level as most red tasks.
Dawid Bujnicki Junior Developer
12 August 2021, 11:01
https://www.linuxtopia.org/online_books/programming_books/thinking_in_java/TIJ314_037.htm This one helped me a lot, together with Skynet tip.
24 March, 17:09
I wish I could say I really understood this article, but I did not. Regardless, it has all of the answers that Mr. Bujnicki promises! Sometimes, you just gotta go through the motions...
20 March 2020, 13:48
Bruce Eckel, Thinking in Java 4th Edition, p. 711 "An alternative to Externalizable".
9 July 2020, 17:05
Best hint! Thanks!
29 July 2020, 02:35
Thanks. Same book, same edition, I had it on page 922.
Bart De Lepeleer
16 December 2020, 16:32