Remove use of Java 8 specific API call

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1615599 13f79535-47bb-0310-9956-ffa450edef68
Fix the Eclipse nags

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1615602 13f79535-47bb-0310-9956-ffa450edef68
Start to test specifications

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1615607 13f79535-47bb-0310-9956-ffa450edef68