JDK 7u121 now available
Change effective on 14 November 2016
Heroku’s support for Java has been upgraded to include OpenJDK 7u121. To set the JDK version for an application, create a system.properties
file in the root directory of your project and put the following code in it:
java.runtime.version=1.7.0_121
For more information on Heroku’s Java support, see the Dev Center documentation for Java. For more information on OpenJDK 7u121, see the OpenJDK documentation for Java 7.