> Hi, all
> There are many standard patterns in J2EE, but I can't
> find any information how to check correctness of UML
> diagram on correspondence with these patterns by QA.
This is really a development process issue and there is no *easy* solution. The most effective method I've found is design reviews. Round trip engineering can be useful, but is so poorly supported by most CaseTools, it tends to be hit and miss.
You also may like to checkout this article of traceability, which while it may appear unconnected should allow you to reconcile the requirement that suggests the pattern, with the final delivery.
http://www.sdmagazine.com/documents/s=815/sdm9904d/
You may also like to checkout ArgoUml, it provides a 'Cognative Support' feature capable of checking the general correctness of your UML.