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Forge Server start.command problems

philosodog

By philosodog
in Support & Bug Reports

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philosodog Tree Puncher

philosodog

Posted
Posted

Greetings- 

I'm attempting to run a forge server on my old mac (An Intel IMac I have booted with High Sierra 10.13.6), and i'm running into a few problems. I understand that to allocate more ram to the forge.jar, I must use a start.command file. This is the start.command I'm using:

#!/bin/bash
cd "$(dirname "$0")"
exec java -Xms12G -Xmx12G -jar forge-1.12.2-14.23.5.2838-universal.jar

Double-clicking, I am met with this gargantuan error:

 

Last login: Sun Aug  4 16:03:25 on console

william-Mac-Pro:~ william$ /Users/william/Desktop/girth/start.command ; exit;

A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:567)

at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:70)

at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:34)

Caused by: java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap')

at net.minecraft.launchwrapper.Launch.(Launch.java:34)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

... 6 more

logout

Saving session...

...copying shared history...

...saving history...truncating history files...

...completed.

 

[Process completed]

 

I have 16 GB of DDR3 RAM, 12GB of which is allocated through the start.command.
I am using Java Version 8, Update 221. 
If anybody needs more information, feel free to ask.

philosodog Tree Puncher

philosodog

Posted
  • Author
Posted

williams-Mac-Pro:~ william$ /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version java version "1.8.0_221" Java(TM) SE Runtime Environment (build 1.8.0_221-b11) Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode) I reinstalled an archived java 7 version, tried to run it and it didn't work, so I updated. I could try going back to that same java 7, and giving you the version?

  • 8 months later...
Carl3668 Tree Puncher

Carl3668

Posted
Posted (edited)

How did you change your java version?

When I install Java 8 and put java -version in the terminal it says the version is 14...
I think I should uninstall Java 14 before installing Java 8 but I’m not sure and I don’t know how to uninstall Java 14

Edited by Carl3668
DaemonUmbra Reality Controller

DaemonUmbra

Posted
Posted

You should be able to uninstall it like any app.

Also this thread is slightly old, please make your own thread next time.

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

  Reveal hidden contents

 

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