JDK 7u131 now available
Change effective on 14 February 2017
Heroku’s support for Java has been upgraded to include OpenJDK 7u131. 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_131
For more information on Heroku’s Java support, see the Dev Center documentation for Java. For more information on OpenJDK 7u131, see the OpenJDK documentation for Java 7.