マイクラ関連

https://www.eclipse.org/downloads/packages/

linux x86-64　を選択してダウンロード

展開してインストール

cd eclipse-installer/
./eclipse-inst

画面にしたがってaccept all

ビルドツールらしい

chmod +x ./gradlew

SDKMAN!
curl -s https://get.sdkman.io | bash
source "/home/ya/.sdkman/bin/sdkman-init.sh"
sdk version

gradle
sdk install gradle 8.12

export JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64

javaのバージョン調べ
java -version

[root@vm-92e54029-29 ~]# java -version
openjdk version "17.0.11" 2024-04-16 LTS
OpenJDK Runtime Environment (Red_Hat-17.0.11.0.9-5) (build 17.0.11+9-LTS)
OpenJDK 64-Bit Server VM (Red_Hat-17.0.11.0.9-5) (build 17.0.11+9-LTS, mixed mode, sharing)

https://www.oracle.com/jp/java/technologies/downloads/#java21

x64 RPM Package

sudo yum install https://download.oracle.com/java/21/latest/jdk-21_linux-x64_bin.rpm

[root@vm-92e54029-29 ~]# java -version
java version "21.0.6" 2025-01-21 LTS
Java(TM) SE Runtime Environment (build 21.0.6+8-LTS-188)
Java HotSpot(TM) 64-Bit Server VM (build 21.0.6+8-LTS-188, mixed mode, sharing)

該当のforgeを探しに行く
https://files.minecraftforge.net/net/minecraftforge/forge/

java -jar forge-1.21.1-52.1.0-installer.jar

サーバー上でやるときは
java -jar forge-1.21.1-52.1.0-installer.jar --installServer

Javaインストール

$ sudo apt update
$ sudo apt install openjdk-21-jdk

$ java --version
openjdk 21.0.6 2025-01-21
OpenJDK Runtime Environment (build 21.0.6+7-Ubuntu-122.04.1)
OpenJDK 64-Bit Server VM (build 21.0.6+7-Ubuntu-122.04.1, mixed mode, sharing)