Some game servers require using Java Runtime Environment (JRE) such as Minecraft and Project Zomboid.
To install the most up to date JRE for your distro run the following: apt install default-jre Or to select openjdk, run the following changing the version number: apt install openjdk-8-jre
Alternatively on Ubuntu you can use webupd8 PPA to download and install Oracle's Java. This is required for some Java profiling tools as those tools only use Oracle's JDK. You can view the instructions on how here Debian can follow webupd8 guide here
Run the following command, changing the version number:
yum install java-1.8.0-openjdk
JRE Availability Table Different Distros have different versions of Java. This page will outline the different versions that are available.
| Distro | JRE 6 | JRE 7 | JRE 8 |
|---|---|---|---|
| CentOS 5 | YES | YES | NO |
| CentOS 6 | YES | YES | YES |
| CentOS 7 | YES | YES | YES |
| Debian 6 | YES | NO | NO |
| Debian 7 | YES | YES | NO |
| Debian 8 | NO | YES | YES (backport) |
| Debian 9 | NO | NO | YES |
| Ubuntu 12.04 LTS | YES | YES | NO |
| Ubuntu 14.04 LTS | YES | YES | NO |
| Ubuntu 16.04 LTS | NO | NO | YES |
| Ubuntu 18.04 LTS | NO | NO | YES |
Distrowatch also contains details of JRE versions.
Further Reading https://help.ubuntu.com/community/Java