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Just dont undertand the ouput of the car.weight after deserilazation, I expected the value to be 12, there is something that I am missing for sure...please help
 
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Change your Car implementation with following code..




if you observe your code, you had define new property weight with hides the property member from Vehicle. so in your code there are two member having same name.

one is

weight - > Vehicle - which not cover under serialization and it`s value is assign by constructor at time of deserialization
weight - > Car - which cover under serialization so normal deserialization will work on it.


 
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The question is about inheritance, not about serialization much.
 
It is sorta covered in the JavaRanch Style Guide.
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