Trouble reading back a serialized object

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2 total messages Started by George Mon, 16 Dec 2002 20:23

#750

Author: George
Date: Mon, 16 Dec 2002 20:23

14 lines
1377 bytes

My class has two sets of data members:  a protected TreeMap and a bunch of
protected final Strings.

I want only the TreeMap object to be serialized.  However the TreeMap
contains entries for which the Strings are the keys.

In debugging the readObject method I find that whenever this method has been
called the protected String members of the class always get set to null
(even tho they are declared final and initialized in the declaration
statement).

Why is this happening?  What am I doing wrong?

Thanks.

Re: Trouble reading back a serialized object

#751

Author: John McGrath TeamB
Date: Mon, 16 Dec 2002 21:22

21 lines
1510 bytes

On Mon, 16 Dec 2002 16:06:59 -0500, George wrote:

> > Does your readObject() method call the defaultReadObject() 
> > method on the ObjectInputStream passed to it?

> No it doesn't.  Should it?

Yes.  That is what will set those String values.

Here is a some useful information on serialization:

   http://java.sun.com/docs/books/tutorial/essential/io/serialization.html

-- 
Regards,

John McGrath [TeamB]

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