The actual class file will reside in the user’s current working directory, as already specified with the -d option to the javac instance. A 0 status code indicates that the compile succeeded: ...

Google is deprecating the Jack compiler toolchain it introduced in 2014 to incorporate Java 8 features, which will be be natively supported going forward.

The compiler, which will convert JavaFX Script to JVM byte code, will be built on top of the underlying infrastructure of Javac.