use java 8

Author: fishercoder1534

.travis.yml

@@ -2,12 +2,11 @@ language: java
 
 sudo: required
 
-jdk:
-  - oraclejdk8
+jdk: oraclejdk8
 
 install: true
 
 script:
-  - sudo apt-get update && sudo apt-get install oracle-java8-installer
-  - java -version
-  - mvn package
+  mvn package
+  sudo apt-get update && sudo apt-get install oracle-java8-installer
+  java -version