I'm learning clojure-java interoperability. After a bit of googling and stackoverflowing, I choose implementing ScheduledExecutorService from Clojure because why not, in fact, now I know how to run simple scheduled tasks without java verbosity.
$ lein uberjar
$ java -jar target/uberjar/clj-java-interop-example-0.1.0-SNAPSHOT-standalone.jar