rosjava install error

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Hello,

I've been trying to use rosjava_core and android_core but I've been coming up against this build error when using gradle to install rosjava_core under the groovy branch:

FAILURE: Build failed with an exception.

* What went wrong: Execution failed for task ':rosjava_test:compileJava'. > Compilation failed; see the compiler error output for details.

* Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

I'm not sure where to find the package rosjava_test as I believe it may be a separate dependency.

Thanks