Super simple rest API for converting currencies built with Spark(http://sparkjava.com/) and JSR 354 (Money and Currency API).
Build the project and run locally. Spark should run a server and listen to locahost:4567.
/convert/dollar/*/to/euro
/convert/dollar/*/to/yen
/convert/euro/*/to/dollar
/convert/euro/*/to/yen
/convert/yen/*/to/dollar
/convert/yen/*/to/euro