jetty9 in open suse: how to start?

Question

I installed jetty via gwt maven plugin and it works in development mode. Then I want to deploy.. hm... I did with tomcat, but it is stupid to have two servers run.

So I try with jetty also for production.

So I tried to figure out how to start jetty.

Unfortunately all advise seems old. In suse tumbleweed jetty is split into modules. I tried to install the start module and to start with java -jar jetty-start.jar.

Answer:

java.lang.NoClassDefFoundError: org/eclipse/jetty/util/ManifestUtils
        at org.eclipse.jetty.start.StartArgs.<clinit>(StartArgs.java:81)
        at org.eclipse.jetty.start.Main.processCommandLine(Main.java:292)
        at org.eclipse.jetty.start.Main.main(Main.java:75)
Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.util.ManifestUtils
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
        ... 3 more

Usage: java -jar $JETTY_HOME/start.jar [options] [properties] [configs]
       java -jar $JETTY_HOME/start.jar --help  # for more information

Ok, i am in /usr/share/java/jetty which may be JETTY_HOME, but instead of start.jar, there is only jetty-start.jar. Do I have to install another module? Or am I in a completely wrong folder???

Help very much appreciated.