Java

• Installation

  • Fedora 44 and onwards OpenJDK builds are removed in favor of Adoptium Temurin OpenJDKs, please follow following instructions to install Temurin OpenJDKs. Run these commands one after another.

    1. sudo dnf install adoptium-temurin-java-repository
       

    2. sudo fedora-third-party enable
       

    3. Install appropriate version using sudo dnf install temurin-<version>-jdk replace <version> with the required version. Example:

       sudo dnf install temurin-21-jdk
       

    4. Once Temurin JDK is installed change default Java version of your system using following command and select Temurin JDK by typing appropriate number from JDK list and enter.

       sudo alternatives --config java
       

    5. Once you have set correct JDK, you can verify by running in the terminal java --version should get similar ouput where it shows current JDK being used, it should be the Temurin one.

       openjdk 21.0.12 2026-07-21 LTS
       OpenJDK Runtime Environment Temurin-21.0.12+8 (build 21.0.12+8-LTS)
       OpenJDK 64-Bit Server VM Temurin-21.0.12+8 (build 21.0.12+8-LTS, mixed mode, sharing)
       

  • Fedora 43 and below versions

    • Open up a terminal and type in these commands:

      sudo dnf install java-21-openjdk
      

    • This will install and setup the Java JDK for you.
    • Remember! JDK versions will be named in the same format. So JDK 11 would be named as java-11-openjdk and so on. So if you want to install other versions of the JDK you follow the same format. Its easy, isn't it? :D

• Running Jar files

  To run .jar files, such as ModCheck or Ninjabrain Bot, you can use the following terminal command, replacing <path/to/jarfile.jar> with the actual path to the .jar file:

  java -jar <path/to/jarfile.jar>
  

GraalVM

• GraalVM is a Java runtime which runs slower to start with, but greatly speeds up as time goes on. Using GraalVM is recommended for running Minecraft when using SeedQueue.
  • To download it, look here. Make sure to select Java 21 along with Linux x64 for the platform.
  • After downloading it, extract it somewhere and select the java binary file in the bin folder by right clicking your instance in Prism Launcher > Edit > Settings > Java > Java installation > Browse.