JDK compat for TravisCI.
JDK compat for TravisCI.

opencadc/vosui,hjeeves/cadc-vosui,hjeeves/cadc-vosui,hjeeves/cadc-vosui,opencadc/cadc-vosui,opencadc/vosui,opencadc/cadc-vosui,opencadc/cadc-vosui,opencadc/vosui,hjeeves/cadc-vosui,opencadc/cadc-vosui,opencadc/vosui