Minecraft Snapshot 22w12a Server Jar Download

Also known as snapshot, pre-release, release candidate.

Experimental — snapshot Official source

Minecraft Snapshot 22w12a is a weekly development snapshot of Minecraft: Java Edition leading up to 1.19, published by Mojang on 24 Mar 2022. Its dedicated server jar is 44.7 MB and requires Java 17 or newer. The final Minecraft 1.19 was released on 7 Jun 2022.

Download

Download server.jar44.7 MB

Downloads from piston-data.mojang.com — Official — Mojang.

SHA-1 · published by Mojang
f238cf129a0848effe5037d8aaefe3f1f350b689

How to verify this file on Windows, macOS and Linux.

Source: Official — Mojang SHA-1 shown below Last checked: Report a problem

Version facts

Published by Mojang
ChannelPreview (weekly)
Required JavaJava 17 or newer · Temurin 17
File size44.7 MB
Licence / termsMinecraft EULA
Upstream projectwww.minecraft.net

What changed

Newest upstream commits:

  • #1 · 24 Mar 2022 Added Darkness mob effect
  • Added Sculk Shrieker functionality
  • Added the Warden mob
  • Added boat with chest
  • Added the Swift Sneak enchantment
Full changelog for Minecraft Snapshot 22w12a (Minecraft Wiki)

Compatibility

No plugins or mods — the unmodified game exactly as Mojang ships it (data packs still work).

Players need a Minecraft: Java Edition Snapshot 22w12a client on the same version.

Minecraft Snapshot 22w12a in other server software

Fabric Quilt

Known issues & safety notes

  • Preview builds are experimental: they can corrupt or irreversibly upgrade worlds, and most plugins and mods do not support them yet. Test on a copy of your world.

How to set up Minecraft Snapshot 22w12a

  1. Install Java 17 or newer (e.g. Eclipse Temurin) and check it with java -version.
  2. Download server.jar from Mojang (button above) into an empty folder.
  3. Start it once with the script below; it creates eula.txt and stops.
  4. Set eula=true in eula.txt to accept the Minecraft EULA, then start again. Players join on port 25565.

Linux / macOS — start.sh

#!/bin/sh
# start.sh — Minecraft 22w12a
cd "$(dirname "$0")"
JAVA_MAJOR=$(java -version 2>&1 | awk -F'"' '/version/ {split($2, v, "."); print (v[1] == "1") ? v[2] : v[1]}')
if [ "$JAVA_MAJOR" -lt 17 ] 2>/dev/null; then
  echo "Java 17 or newer is required (found Java $JAVA_MAJOR)."
  exit 1
fi
java -Xms4G -Xmx4G -jar server.jar nogui

Windows — start.bat

@echo off
REM start.bat — Minecraft 22w12a
REM Needs Java 17 or newer: run "java -version" to check.
java -Xms4G -Xmx4G -jar server.jar nogui
pause

Rule of thumb: 2–4 GB for a few friends, 6–10 GB for a public server with plugins. Set -Xms equal to -Xmx and leave 1–1.5 GB for the operating system. How much RAM?

Docker

docker run -d -p 25565:25565 -e EULA=TRUE -e TYPE=VANILLA -e VERSION=22w12a --name mc itzg/minecraft-server

Uses the community itzg/minecraft-server image, which downloads the file itself.

Upgrading

FAQ

What Java version does Minecraft Snapshot 22w12a need?

Minecraft Snapshot 22w12a needs Java 17 or newer. Running it on an older Java fails with an UnsupportedClassVersionError mentioning class file version 61.0.

Is Minecraft Snapshot 22w12a safe for my survival world?

Only on a copy. Preview versions are experimental and upgrade worlds irreversibly; keep a backup and don't switch a live world to a snapshot, pre-release or release candidate.

Is this the Minecraft game or an APK?

No. This is the Java Edition dedicated server — software for hosting a world. It is not the game client and there is no Android APK. Phone and console players use Bedrock Edition.