jboss AS 7.1 issues with Jadira usertype

[gmlopezdev]

Hi,

I've started using jadira usertype library and found a warning on my logs stating the following:

    "Under JBoss and Tomcat it may not be possible to handle DST transitions correctly"

The issue (apparently) comes up because at some point they're trying to get an instance of sun.awt.AppContext by using reflection and an exception is thrown because the class cannot be found.

They've commented the code as the following:

    // This check is for environments (e.g. JBoss) which sun.awt.AppContext cannot be loaded

    Class.forName("sun.awt.AppContext");

Is there anyone who can explain me why is this happening (the class not found error) or whether there's any safe workaround for this issue?

Thanks in advance!

Message was edited by: Guillermo L Subject updated

[nickarls]

The classloading system is quite flexible, getting a class to load is generally just matter of configuration (e.g. system paths in jboss-deployment-structure.xml). Perhaps that comment is for an older AS version.

[gmlopezdev]

First of all thanks for your response!

The problem is that I actualy get the warning log and the class not found exception within jboss as 7.1.1. I agree that classloading is flexible however I'd like to know why this class cannot be found since I'm using oracle jdk and the class is actually there?

[jaikiran]

Java vendor specific classes (sun.* classes for example) aren't made visible to the applications by default. Take a look at the classloading chapter on how it all works https://docs.jboss.org/author/display/AS71/Class+Loading+in+AS7