Hi,
Travis CI updated JDK from 8 to 11, and java-chassis got some compile errors. Check https://travis-ci.org/apache/servicecomb-java-chassis/jobs/595065203 for details. And the error explaination is : https://blogs.oracle.com/darcy/new-javac-warning-for-setting-an-older-source-without-bootclasspath I have some ways to solve this problem: 1. add -Xlint:-options to ignore the warnings. And maybe cause some unexpected error when running the compiled jar files using JDK 8. 2. still using JDK 11 and add rt.jar in project source, and add -bootclasspath "$SRC_HOME/jre/lib/rt.jar" option. This will add rt.jar for each project and may not be valid to do so 3. Force travis CI using JDK 8. But I can find any way to do this. Any ideas or help ?
