jetty9 software package provides Java servlet engine and webserver, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install jetty9
jetty9 is installed in your system.
Make ensure the jetty9 package were installed using the commands given below,
$ sudo dpkg-query -l | grep jetty9 *
You will get with jetty9 package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Java |
| Package | jetty9 |
| Version | 9.2.14-1 |
| Description | Java servlet engine and webserver |
| Sub Section | Java |