We use hibernate on our projects for the ORM technology. We are starting to use EJB3 now for all new development. Luckily its very similar to hibernate so we don't have to re-skill too much.

Hibernate HQL Inner Join

An issue that I came across recently was hibernate's HQL language inability to handle "inner join on" clauses. If your domain entity model has relationships defined between the related objects then something like

The other day I suddenly started getting this error when running maven 2 on my gentoo box.

Exception in thread "main" java.lang.NoClassDefFoundError: org/codehaus/classworlds/Launcher

Don't you hate it when you figure out a bug only to forget it two weeks later? This usually happens with those bugs which aren't your fault. One such bug I came across recently, was when I was using XFire 1.2.6 and Spring 2.0.2.

When trying to view the wsdl for the service I got the following error in the tomcat logs:

A while ago I decided it was time to abandon the old familiar Ant build tool and try Maven. Everyone claims that Maven is much better than Ant so I thought lets give it a go. Unfortunately I found the documentation available on the net confusing and hard to follow.

Struts Validations Framework How to

The struts validation framework is quiet straight forward to use but there are lots of little gotchas that slow down the learning process. It should take one no more than two hours to understand and use the validation framework. Here are some of pointers that help new users of the framework.

Ok, generally I agree that Maven is a good tool, its just that it promises to be a great tool but fails to deliver on its central promise of easy dependency management. The main issues I have with Maven are:

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