switch from oraclejdk8 to openjdk8 for Travis builds

Adam Sotona · Adam Sotona · commit a9f52157e23f · 2019-07-24T17:38:42.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: java
 jdk:
-  - oraclejdk8
+  - openjdk8
 sudo: required
 after_success:
   - bash <(curl -s https://codecov.io/bash)
