How to determine the JAXB runtime version

I've had to confirm which JAXB version I've been using for my runtime. In my search through various forums I've come across some code that more or less worked, but it wasn't very robust and wasn't explained well. I've put this together to answer the question properly.

This code will determine which JAXB-RI runtime version is being used. This will not work for Moxy or any other JAXB implementation other than the V2 RI. I could not find the equivalent code for Moxy, so instead of the code failing with a ClassCastException, I make sure that the V2 RI is being used before trying to get the version number.

JAXB Version Code

JAXBContext jaxbCtx = JAXBContext.newInstance("net.igorkromin");

if (jaxbCtx instanceof com.sun.xml.bind.v2.runtime.JAXBContextImpl) {

System.out.println("JAXB Version: " +

((com.sun.xml.bind.v2.runtime.JAXBContextImpl) jaxbCtx).getBuildId());

}

else {

System.out.println("Unknown JAXB implementation: " + jaxbCtx.getClass().getName());

}

My output is something like this:

Output

JAXB Version: 2.2.11

-i