Add oraclejdk7.
diff --git a/.travis.yml b/.travis.yml
index c1335bd..c2fac09 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,6 +18,7 @@
 
 jdk:
   - openjdk7
+  - oraclejdk7
   - oraclejdk8
 
 after_success: