Application registry is a core RIM Java OS structure . To play with it add the following string
Object __appReg = Process.getAppRegistry();
to BB java project. We used “Hello World!” sample project from JDE. Sure you need correct the import section of your project by adding import net.rim.vm.*;.
Using JDE IDE set a breakpoint on the next line and execute your code in standard IDE emulator. When program stops at the breakpoint, check __appReg :)
By the way the public key mentioned in this post was discovered using this approach.