Hi everybody,

I am new to Orekit. I installed orekit Project and orekit-data. I ran the Keplerian Propagator example, as well.
But, with the next example, I got error for “”

I have gone through this forum. There was a post with similar topic, it says to build with JDK 11. Also, try to build with JDK 11. But, no fix.

Many thanks,


Hi @keskin,

Welcome to the forum !

I wouldn’t know about JDK 11 but what I do is add the dependency “tools.jar” in the build path of Orekit. “tools.jar” binary should be in your JDK. For example, in OpenJDK8 it’s located in the directory “$JDK_PATH/lib”.