specifying jdk
diff --git a/.travis.yml b/.travis.yml
index c8b363c..b782ec9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,6 @@
 language: java
 before_install: ant download-ivy
 install: ant all
+
+jdk:
+  - oraclejdk8