.travis.yml

language: java
# use latest dist by default, but certain setups need to fall back to xenial or even trusty (see also matrix):
# - oraclejdk8 needs trusty, see https://travis-ci.community/t/install-of-oracle-jdk-8-failing/3038/9
#   note: as of 08.09.2019, this JDK provided by Travis is rather old (just minor version 151 instead of 222)
#         and installing a newer one manually seems to require too much effort.
# - openjdk8 fails on bionic (similar to oraclejdk8 on >trusty), but on xenial the minor version is way more recent
dist: bionic
matrix:
  include:
  - name: "OpenJDK 11"
    jdk: openjdk11
    env: OPENJDK_VERSION=11
  - name: "OpenJDK 8"
    jdk: openjdk8
    env: OPENJDK_VERSION=8
    dist: xenial
  - name: "OracleJDK 8"
    jdk: oraclejdk8
    dist: trusty
  - name: "OpenJDK 12"
    jdk: openjdk12
    env: OPENJDK_VERSION=12


notifications:
  webhooks:
    urls:
      - https://webhooks.gitter.im/e/754eed67f5ed5a0c5de5
    on_success: always  # options: [always|never|change] default: always
    on_failure: always  # options: [always|never|change] default: always
    on_start: false     # default: false
after_success:
  - coveralls
install: 
  - if [ -n "${OPENJDK_VERSION}" ]; then
      JAVA_HOME_CANDIATE=/usr/lib/jvm/java-${OPENJDK_VERSION}-openjdk-amd64;
      if [ "${JAVA_HOME}" != "${JAVA_HOME_CANDIATE}" ] && [ -d "${JAVA_HOME_CANDIATE}" ]; then
        echo "Switching to a (possibly) more recent JDK ${OPENJDK_VERSION} minor version ...";
        export JAVA_HOME=${JAVA_HOME_CANDIATE};
        export PATH="$JAVA_HOME/bin:$PATH";
      fi
    fi
  - mvn -version


script: mvn package -Dgpg.skip=true