language: java
jdk:
  - openjdk8
  - openjdk7
install: sh -c 'cd jOOU && mvn install -DskipTests=true'
script: sh -c 'cd jOOU && mvn test'

language: java
jdk:
  - oraclejdk9
  - openjdk8
  - openjdk7
install: sh -c 'cd jOOU && mvn install -DskipTests=true'
script: sh -c 'cd jOOU && mvn test'

Build jOOU also with JDK 9
Build jOOU also with JDK 9