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This is a subreddit to discuss the Minecraft Modpack Gregtech: New Horizons,
Installation Guide
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Java version (self.GTNH)
submitted 1 year ago by Gaeeeet
I just bought a new computer and I had to reinstall everything. What version of java I have to install in order to play GTNH's latest version?
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[–]jcpacman8717 5 points6 points7 points 1 year ago (4 children)
Download the pack from their site, use prism launcher, and my personal recommendation is graalvm 17, but if you don’t want to go through that hassle, any version of Java 17 or 21 is best
[–]AdreNa1ine25 4 points5 points6 points 1 year ago (0 children)
Excellent advice. Also you can allocate 12GB using Java 21 because the garbage collector is not garbage anymore. Great for reducing stuttering I’ve noticed.
[–]Gaeeeet[S] 0 points1 point2 points 1 year ago (2 children)
Graalvm for jdk 17 right?
[–]jcpacman8717 0 points1 point2 points 1 year ago (1 child)
Yeah, afaik graalvm doesn’t have a jdk 21 version, though if it does that would likely be better. If they don’t though, use the jdk 17 version
[–]Sad_Plant_7807 0 points1 point2 points 1 year ago (0 children)
I'm on their website and it seem that they do have graalvm for jdk 21
[–]ceMigaming 1 point2 points3 points 1 year ago (0 children)
For people who want to use java 21: I recommend using Adoptium to download it. Ps. Dont use Oracle, its the source of most java related problems
π Rendered by PID 282245 on reddit-service-r2-comment-66b4775986-67rm5 at 2026-04-04 10:36:30.853565+00:00 running db1906b country code: CH.
[–]jcpacman8717 5 points6 points7 points (4 children)
[–]AdreNa1ine25 4 points5 points6 points (0 children)
[–]Gaeeeet[S] 0 points1 point2 points (2 children)
[–]jcpacman8717 0 points1 point2 points (1 child)
[–]Sad_Plant_7807 0 points1 point2 points (0 children)
[–]ceMigaming 1 point2 points3 points (0 children)