How to Run Outdated JDK 8 with PaperMC

To run PaperMC with JDK 8 on a PC where JDK 17 and 21 are installed, you can create a separate environment for JDK 8. Here's a step-by-step guide:

1. Install Oracle JDK 8:

   • Download the JDK 8 installation package from the official Oracle website.
   • Run the installer and follow the on-screen instructions.

2. Create a separate environment for JDK 8:

   • Open the Start menu and search for "Environment Variables."
   • Click on "Edit the system environment variables."
   • In the System Properties window, click on the "Advanced" button.
   • Under the "Advanced" tab, click on the "Environment Variables" button.
   • In the "System Variables" section, find the PATH variable, select it, and click on "Edit."
   • In the "Edit environment variable" window, add the path to the JDK 8 bin directory at the beginning of the variable value, separated by a semicolon (;).
   • Click "OK" to save the changes.

3. Run PaperMC with JDK 8:

   • Navigate to the PaperMC directory.
   • Run the PaperMC command, specifying the JDK 8 path if necessary:

     java -jar papermc.jar
     

   • If you need to specify the JDK 8 path, use the following command:

     /path/to/jdk8/bin/java -jar papermc.jar
     

References:

• Oracle JDK 8 Download: https://www.oracle.com/java/technologies/javase-jdk8-downloads.html

Articles:

• How to Install JDK on Windows: https://www.javatpoint.com/how-to-install-jdk-on-windows
• Setting Path Variable in Windows: https://www.javatpoint.com/how-to-set-path-variable-in-windows

Online Resources:

• Setting the PATH environment variable: https://docs.microsoft.com/en-us/windows/win32/environment/environment-variables#path-environment-variable
• How to Run a Java Program with a Specific JDK: https://www.baeldung.com/java-run-program-specific-jdk