Quartz and Flux have some things in common. Both are schedulers, both are in Java, and both can score you a bunch of points in Scrabble. However, you need to make a decision, Flux or Quartz.
If you are a Java developer looking for a job scheduler, pretty quickly you will find Flux and Quartz are possible if not the probable solutions for you. Flux and Quartz do have a certain degree of overlap but Flux is a more sophisticated product with considerably more functionality. Therefore, our President, David, put together a Quartz or Flux? document. Since neither Flux nor Quartz is right for everyone, we hope that this might help you to quantify the differences.