gcj-5-jre-headless software package provides Java runtime environment using GIJ/Classpath (headless version), you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gcj-5-jre-headless
gcj-5-jre-headless is installed in your system.
Make ensure the gcj-5-jre-headless package were installed using the commands given below,
$ sudo dpkg-query -l | grep gcj-5-jre-headless *
You will get with gcj-5-jre-headless package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | Java |
| Package | gcj-5-jre-headless |
| Version | 5.4.1-3ubuntu1 |
| Description | Java runtime environment using GIJ/Classpath (headless version) |
| Sub Section | Java |