When you develop ADF Web Application you often use the ADF ApplicationModule Tester (BC4J Tester) to quickly test your business components data model and your self-written code in any EntityObject, ViewObject or ApplicationModule. For more information about how to do this look at JDeveloper & ADF: Use the Application Module Tester (BC4J Tester) to Test all your BusinessLogic.
Users who use one of the latest JDeveloper versions 220.127.116.11.0 and newer may have noticed, that the BC4J Tester application starts without an error, but doesn’t show the dialog. I run into this a couple of times lately and decided to dig into this problem. On the Oracle Development Spaces, I saw some threads about this too.
The reason for this behavior is that any EO, VO or other methods in the application module have an error, which can’t be found during compile time. Read the complete article here.
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