Re: Error message I can't figure out

From:
Daniel Pitts <newsgroup.spamfilter@virtualinfinity.net>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 23 Feb 2010 10:54:11 -0800
Message-ID:
<mvVgn.6129$jB5.4059@newsfe19.iad>
On 2/23/2010 10:28 AM, Tim Slattery wrote:

I'm running a J2EE app in Weblogic. The app works, but I keep getting
this error on the console:

java.rmi.MarshalException: failed to marshal
update(Lweblogic.cluster.replication.ROID;ILjava.io.Serializable;Ljava.lang.Object;);
nested exception is:
         java.io.NotSerializableException: java.util.TreeMap$Values

I am storing a TreeMap object in the session object, but the
description of TreeMap says that it implements the Serializable
interface. So why am I getting this error?


The only thing I could think of is if the keys or values of your map
aren't Serializable.

Actually, hmm... I'm not seeing a "Values" class in the TreeMap source
code. At least not in 1.5. Let me double check 1.6...

Ah, I see it in 1.6

The collection returned from TreeMap.values() is not Serializable. You
either need to serialize the whole TreeMap, or copy the values into a
different container.

--
Daniel Pitts' Tech Blog: <http://virtualinfinity.net/wordpress/>

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