Build with Java 11

Author: dbmeneses

.travis.yml

@@ -6,7 +6,7 @@ script:
   - ./travis.sh
 
 jdk:
-  - oraclejdk8
+  - oraclejdk11
 
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
@@ -24,9 +24,3 @@ notifications:
     - secure: "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"
   on_start: always
 
-addons:
-  apt:
-    packages:
-      # upgrade java 8 as the default version 1.8.0_31 prevents from compiling sources
-      # https://github.com/travis-ci/travis-ci/issues/4042
-      - oracle-java8-installer