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GenericServlet Vs HttpServlet

 
Harikrishna Gorrepati
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Hi,

GenericServlet class implements Serializable interface.
HttpServlet extends Genericservlet implements Serializable interface. Becuase HttpServlet extends GenericServlet, HttpServlet will be automatically implements Serializable interface know.. Why API says HttpServlet implementes Serializable interface also. I feel it is kind of duplicate. Please advice..Thanks
 
Tim Holloway
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Just because a base class is serializable doesn't guarantee that a subclass might not include non-serializable elements.
 
Harikrishna Gorrepati
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Hi Tom, Can you please make your statement simple. I am not clear. Thanks
Tim Holloway wrote:Just because a base class is serializable doesn't guarantee that a subclass might not include non-serializable elements.
 
It is sorta covered in the JavaRanch Style Guide.
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