Java 10 now available
Change effective on 21 March 2018
Heroku’s support for Java, Scala, Clojure, Gradle, and JRuby now includes support for OpenJDK version 10. To use this version of the JDK, create a
system.properties file in your application and put the following code in it:
After your next deployment, Heroku will install and run your app with OpenJDK 10. For more information, see the article on Heroku Support for Java in the Dev Center. For more information on JDK 10, see the official OpenJDK documentation.