I am in the process of upgrading all the JARs for my application. The previous version of eclipse.jetty JARs that I used was 7.6.10. Which had the class mentioned. So, now that I am upgrading to 9.4.14.v20181114, I don't see any of the JAR files having this package at all. Can you tell me if the package was totally dropped or moved to some other JAR that I have no idea about. If the classes are gone, some pointers on how to rework the code would be helpful as well.
As answered before at:
Since you didn't detail what exactly your goal is, I cannot give you a targeted answer.
In short, you will be using the ServerConnector and appropriate configuration for it to accomplish whatever end goal you have.
See examples above in prior answers, and also the various embedded-jetty examples available by the Eclipse Jetty project itself.