Verify/add support for Java 9/10/11 and decide whether to upgrade

clarin-eric / VLO

Virtual Language Observatory

GNU General Public License v3.0

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Verify/add support for Java 9/10/11 and decide whether to upgrade #132

Closed twagoo closed 5 years ago

twagoo commented 6 years ago

See what actions have to be taken (and carry them out if feasible) to make the VLO web app, importer and Solr instance run without issues on a Java 9 JRE, as well as building on a Java 9 environment.

Some potentially helpful resources:

Oracle's Migrating to JDK 9 guide
Maven on Java 9
Java 9 migration guide
Code First Java 9 Tutorial (section Migration challenges)

twagoo commented 6 years ago

Note that it may actually be wise to stick with Java 8 as an LTS release. See the post "Java 9 has six weeks to live and this commentary.

twagoo commented 5 years ago

Lots of links here: https://dzone.com/articles/life-beyond-java-8

These use cases seem particularly helpful:

teckart commented 5 years ago

I migrated my test installation to Java 11 (without actually using vlo-sitemap and vlo-statistics). Updating required some changes in pom-files (compiler-plugin version + release version and adding EE dependencies that were removed from the JDK). To avoid warnings because of Guice dependency, a current Maven installation (3.6.0) is required.

twagoo commented 5 years ago

I have rebased the issue132 branch to the current development (post 4.7.0 release) as issue132b.

twagoo commented 5 years ago

merged into development