RE: Beginner java question: Serializable

[<SRamanujan@xxxxxxxxxxxxxxxxxx>]

>From what I understand, serializablity of a class is the ability to
convert an object to byte array and back to an object.  This is used to
write/read back from an external persistent file/database.  So by
default, all the data classes will be defined as serializable so that we
could use their methods to perform these actions.

Thanks,
Sudha

Sudha Ramanujan
SunGard Futures Systems
sramanujan@xxxxxxxxxxxxxxxxxx
(312) 577 6179
(312) 577 6101 - Fax


-----Original Message-----
From: Lim Hock-Chai [mailto:Lim.Hock-Chai@xxxxxxxxxxxxxxx] 
Sent: Monday, December 20, 2004 9:18 AM
To: Java Programming on and around the iSeries / AS400
Subject: Beginner java question: Serializable

Can somebody tell me under what condition should I consider implementing
Serializable interface?  I've a book that shows how to use it to write
an object to a file and retrieve it back.  I think I understand what it
does but I'm not sure when should I consider implement it.  
 
(Note:  Last night when I was trying to deploy a web app to Tomcat, it
failed and the log said that one of the bean is not serializable.  After
some digging I finally found out that I'm missing <%@ taglib
uri="struts/logic-el" prefix="logic" %> in my jsp.  No sure why Tomcat
is giving me the not serializable error, which lead to my question).
 
 
 
 
 
 
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