XMLEncoder exception

[Ilja Smoli]

Hi..
Im getting this exception with XMLEncoder ..

 
java.lang.InstantiationException: java.math.BigDecimal
Continuing ...
java.lang.RuntimeException: failed to evaluate: <unbound>=BigDecimal.new();
....
 

Any ideas?
thx in advance..

[Layne Lund]

I don't know if I'll be able to help. However, if you can show the code where this error occurs, it will definitely be helpful for others to try and find the problem. Be sure to include enough code to give some context. Also mark which line is referenced by the error. It might also be helpful if you paste the complete error message without editing it.

Layne

[Ilja Smoli]

Ok, im sorry
Here is actually what im doing:

ByteArrayOutputStream outStream = new ByteArrayOutputStream();
    XMLEncoder enc = new XMLEncoder(outStream);
    enc.writeObject(obj);
    enc.close();

Object im writing to stream is a MAP, inside this map i have beans which consits other objects, none of these objects have BigDecimal members.. (Or at least I didnt find any)
During encoding i'm getting this log in tomcat console repeating many times...
Thats all I can say...

[Andrew Och]

I get similar problems and found a solution from google search, but don't understand why this is necessary:

ByteArrayOutputStream outStream = new ByteArrayOutputStream();  
XMLEncoder enc = new XMLEncoder(outStream);  
PersistenceDelegate pd = enc.getPersistenceDelegate(Integer.class); 
enc.setPersistenceDelegate(BigDecimal.class, pd);
enc.writeObject(obj);  
enc.close();