The Nashorn repo is in the process of being migrated to OpenJDK and as such is incomplete in several areas. - The build system is not fully integrated. When complete, Nashorn will be installed in its proper location in the JRE. - Once integrated, the correct version of the JDK will be wrapped around Nashorn. In the meantime, ensure you use JDK8 b68 or later. - The jjs tool has not been implemented in binary form yet. Use "sh bin/jjs" (or bin/jjs.bat on windows) in the interm. - The Dynalink component is not fully integrated into Nashorn as yet, but will be when details are finalized. - And, finally Nashorn is still in development. To stay up to date, subscribe to nashorn-dev@openjdk.java.net at http://mail.openjdk.java.net/mailman/listinfo/nashorn-dev.