TravisCI builds fail because the “headless” download of JDK is no longer supported by Oracle. - [influxdb-client-java build #670.2](https://travis-ci.org/bonitoo-io/influxdb-client-java/jobs/551241292) - [Cannot install Oracle JDK 11](https://travis-ci.community/t/cannot-install-oracle-jdk-11/3892) - [Remove Oracle JDK support](https://github.com/sormuras/bach/issues/56)
TravisCI builds fail because the “headless” download of JDK is no longer supported by Oracle.