A Hello World Servlet. Scala 3.8.4. Files must be in the following structure. That structure can lie in root or any sub folder.
/WEB-INF/web.xml
/WEB-INF/classes/mypack/ServApp.class
/WEB-INF/lib/scala-library-3.8.4 from https://repo1.maven.org/maven2/org/scala-lang/scala-library/3.8.4/
So if this is installed on a local machine in the webapps/Hello folder and the port is unchanged from the default the page will display at http://localhost:8080/Hello Requires Apache Tomcat 10.1+ Requires Jetty 12.0 with --add-modules=ee10-deploy