This issue is very similar and could be addressed at the same time as LBCLASSIC-119, LBCLASSIC-121 & LBCLASSIC-131.

The Import-Package definition for logback-core requires that the javax.* packages be available at runtime.
The pom.xml file and my usage seem to indicate that they should be optional.

Attached patch adds javax.* as 'optional' in addition to the exiting janino declaration.

thanks !