try JDK 9

Horcrux7 · Horcrux7 · commit f31c9cd665b6 · 2016-10-25T22:49:55.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,4 +5,5 @@ language: java
 jdk:
   - oraclejdk8
   - oraclejdk7
+  - oraclejdk9
 script: gradle check benchmark
