Removing Java 9 again + disabling Java 7 semi-permanent
language: java
jdk:
- oraclejdk8
- - oraclejdk9
+# Removing Oracle JDK 7 for now, as it seems no longer supported by Travis, which is extremely unfortunate
# - oraclejdk7
# Some JPEGImageReader tests fail on OpenJDK, need to investigate/fix before enabling
# - openjdk7
