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From "Antony Paul" <>
Subject Re: Serializable Logging implementation
Date Wed, 15 Sep 2004 13:04:04 GMT
Then it throws NullPointerException

Antony Paul

----- Original Message -----
From: "Shapira, Yoav" <>
To: "Tomcat Users List" <>
Sent: Wednesday, September 15, 2004 6:05 PM
Subject: RE: Serializable Logging implementation

Hmm, you want to be careful with this pattern.  I like the private
static one for Loggers -- there are very good reasons it's the
recommended pattern (by log4j, by the java.util.logging folks) and the
one that's used (by Tomcat and most other serious apps I know of).

If you really want to stick with your "base class gets the logger"
pattern, consider marking it as transient.

Yoav Shapira
Millennium Research Informatics

>-----Original Message-----
>From: Antony Paul []
>Sent: Wednesday, September 15, 2004 8:27 AM
>To: Tomcat Users List
>Subject: Re: Serializable Logging implementation
>I extend a base form which gets the Log as
>So that no need to define and get a Log instance in subclass. Is there
>way so that I can follow this pattern.
>Antony Paul
>----- Original Message -----
>From: "Tim Funk" <>
>To: "Tomcat Users List" <>
>Sent: Wednesday, September 15, 2004 4:38 PM
>Subject: Re: Serializable Logging implementation
>> logging instances should be static to the class.
>> // Commons logging example but a log4j equiv should be easy to find
>>      private static Log log = LogFactory.getLog(MyClass.class);
>> -Tim
>> Antony Paul wrote:
>> > Hi,
>> >     I used Log4J and commons logging in an ActionForm which is
>> > session. When I reload the context it is invalidating the session
>because it
>> > is non serializable. Is there any work around for this ?. Or do I
>> > use any other Logger.
>> >
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