language: java
jdk:
  - oraclejdk8
  - oraclejdk9
  - oraclejdk11

language: java
jdk:
  - openjdk8
  - openjdk9
  - openjdk11
  - oraclejdk8
  - oraclejdk9
  - oraclejdk11

Add OpenJDK to Travis CI builds
Add OpenJDK to Travis CI builds
