Installer.jar
In many cases, simply double-clicking the .jar file will launch the installer.
There are two primary ways to launch an installer JAR depending on your operating system and needs: This is the standard method for most desktop users. Installer.jar
If double-clicking doesn't work, right-click the file and select Open with... -> Java(TM) Platform SE binary . In many cases, simply double-clicking the
--installServer : Used by Minecraft Forge/Fabric to set up server files. In many cases