Java Edition 17w18a

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The pre-reupload version of this release is lost.
 
While this version is known to exist, it has not been archived in the launcher or elsewhere, and is therefore considered lost.
If you believe you have a copy of this version, please post it on the talk page.
This page covers a development version that has a critical issue under certain conditions.
 
The dedicated server for this version has a security vulnerability in the Log4j library that could be used to perform a remote code execution exploit. It can be addressed by appending a certain JVM argument to the server startup command line.[1]
Minecraft 17w18a
17w18a.png: Infobox image for Minecraft 17w18a the version in Minecraft
Java Edition 17w18a.png: Infobox image for Minecraft 17w18a the version in Minecraft
Edition Java Edition
Release date May 3, 2017
Type Snapshot
Snapshot for 1.12
Downloads Original:
Original client unavailable

Server
Reupload:
Client (.json)
Server

Protocol version 326
Data version 1130
Resource pack format 3
Minimum Java version Java SE 8
◄◄  1.11.2 1.12 1.12.1 ►►

◄  17w17b

17w18a

17w18b ► 

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17w18a is the tenth snapshot for Java Edition 1.12, released on May 3, 2017.[2] It was later reuploaded to fix an aspect ratio issue.[3]

Additions

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Gameplay

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Gamerules

  • /gamerule announceAdvancements
    • Defaults to true.
    • Toggles announcing of advancements in chat, replacing the old server.properties entry.

Command format

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/reload

  • Command to reload advancements and loot tables from disk.
  • This command is available to all opped players in single player and to all level 4 operators on a multiplayer server.
  • Cannot be run from a command block.

General

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Advancements

  • Re-introduced announcements to chat when someone earns an advancement.
    • Shows the description on hover, like before with achievements.
  • Added three advancements to the "Adventure" tab:
Adventure
IconAdvancementIn-game descriptionParentActual requirements (if different)Resource locationRewards
Best Friends ForeverTame an animalSweet dreamsTame one of these 7 tameable mobs: ocelot, donkey, horse, mule, wolf, parrot, llama.adventure/tame_an_animal—
The Parrots and the BatsBreed two animals togetherSweet dreamsBreed a pair of any of these 10 mobs: sheep, cows, pigs, rabbits, chickens, horses, wolves, ocelots, mooshrooms, and llamas.adventure/breed_an_animal—
Two by TwoBreed all the animals!The Parrots and the BatsBreed a pair of each of the mobs mentioned above.adventure/bred_all_animals—
  • Added new minecraft:tick trigger.
    • Activates for each player on every tick, provided that the advancement was revoked before the next tick starts.
  • Added new minecraft:tame_animal trigger.
    • Activates whenever the player tames an animal. The entity condition can be specified to check that the animal that was tamed.
  • Added new show_toast display option.
    • Optional boolean defaulting to true. When false, the specified advancement does not display the toast popup when the advancement is fulfilled.
  • Added new announce_to_chat display option.
    • Optional boolean defaulting to true. When false, this specific advancement does not announce the player fulfilling it to the chat for all players to see.

Changes

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Blocks

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Command blocks

  • Optimized error conditions.

Items

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Maps

  • Changed some map colors around, again.
    • Reverted the wool colors on maps.
    • Moved dyed blocks such as banners to the new terracotta map color palette.

Command format

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/give and /replaceitem

  • Now reinforce item-specific stacking restrictions.[4]
    • This is a reverse of 16w32a. (MC-105965 resolved as "Works as Intended")

General

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Advancements

  • "entity" objects and the minecraft:levitation trigger now use a shared "distance" object.
    • Check if the player is within or outside of the specified range on the x, y, or z axis (in either the positive or negative direction).
    • absolute and horizontal ranges check if the player is within range on all axes, though horizontal excludes the Y axis.
  • Changed the "Great View From Up Here" advancement to 50 vertical blocks.
  • Changed the "Sniper Duel" advancement to horizontal distance.
  • Advancement loading is now strict JSON.

Narrator

  • Optimized, it should work for more people now.

Recipe books

  • Some optimizations.
  • If the player searches "excitedze" in the recipe book, their language switches to Pirate Speak.
    • Searching "excited" no longer does this.

Fixes

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21 issues fixed

From the 1.12 development versions

  • MC-113374 – Map color palette changed
  • MC-114966 – Advancements overlap other advancements
  • MC-115323 – Parrots spawn rarely in Jungle
  • MC-115577 – Parrot play the flapping wings(fly) sound, when player push it
  • MC-115774 – Parrots still make sounds when they are on player shoulder and Silent:1b
  • MC-115810 – Custom resource pack added sounds not playing
  • MC-115902 – Flying parrots will not avoid lava
  • MC-116482 – The server.properties file still has announce-player-achievements
  • MC-116498 – You can't place ladders on the back of stairs
  • MC-116515 – Placing a torch on a wall with a fence gate underneath causes crash
  • MC-116534 – Pressing "Showing craftable" sometimes doesn't show any recipes
  • MC-116537 – Stopping jukebox music while a sitting parrot is dancing occasionally causes the parrot's entire upper body to be misplaced.
  • MC-116574 – "showing craftable" option has several issues
  • MC-116586 – Items in crafting grid disappear if the inventory is not properly closed
  • MC-116638 – Oak Wood in Recipe Book
  • MC-116670 – No toast is shown for first advancement made
  • MC-116675 – Debug messages are printed in log when levitating
  • MC-116704 – The sound block.note.chime is sharp
  • MC-116713 – Creating new world with same name crashes with NullPointerException

From the previous development version

  • MC-116931 – Crash when placing a snow layer on top of a fence gate

From the current version, hotfixed

  • Fixed an aspect ratio issue.

Videos

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Video made by slicedlime:

Trivia

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  • 17w18a (the reuploaded version) was previously removed from the launcher for some time, but was added back in September 2018.
  • The pre-reupload of this snapshot is currently the latest unarchived version of Java Edition.
[edit | edit source]
  • "Adventure" advancement tree in 17w18a.
    "Adventure" advancement tree in 17w18a.

References

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  1. ↑ "Important Message: Security vulnerability in Java Edition" – Minecraft.net, December 10, 2021.
  2. ↑ "Minecraft Snapshot 17w18a" – Minecraft.net, May 3, 2017.
  3. ↑ "The aspect ratio is really wrong - I'm gonna fix it as soon as I get some time. Sorry! :(" – @Dinnerbone (Nathan Adams) on X (formerly Twitter), May 3, 2017
  4. ↑ MC-117005 resolved as "Works as Intended"
[edit | edit source]
Minecraft: Java Edition versions
EnvSprite chunk.png: Sprite image for chunk in Minecraft Asset updates
EntitySprite diamond-chicken.png: Sprite image for diamond-chicken in Minecraft Joke updates
2010s
2020s
ItemSprite iron-sword.png: Sprite image for iron-sword in Minecraft Combat Tests
ItemSprite potion.png: Sprite image for potion in MinecraftCombat Test 7c
ItemSprite bow.png: Sprite image for bow in MinecraftCombat Test 8b
Full Release (1.10–1.19) (2016–2023)
EntitySprite polar-bear.png: Sprite image for polar-bear in Minecraft Frostburn Update
(Guide)
1.10
ItemSprite ocean-explorer-map-pre-texture-update.png: Sprite image for ocean-explorer-map-pre-texture-update in Minecraft Exploration Update
(Guide)
1.11
1.11.1
BlockSprite white-glazed-terracotta.png: Sprite image for white-glazed-terracotta in Minecraft World of Color Update
(Guide)
1.12
1.12.1
1.12.2
ItemSprite trident.png: Sprite image for trident in Minecraft Update Aquatic
(Guide)
1.13
1.13.1
1.13.2
EffectSprite bad-omen-revision-2.png: Sprite image for bad-omen-revision-2 in Minecraft Village & Pillage
& BlockSprite block-of-emerald.png: Sprite image for block-of-emerald in Minecraft Texture Update
(Guide)
1.14
1.14.1
1.14.2
1.14.3
1.14.4
EntitySprite bee.png: Sprite image for bee in Minecraft Buzzy Bees
(Guide)
1.15
1.15.1
1.15.2
ItemSprite netherite-ingot.png: Sprite image for netherite-ingot in Minecraft Nether Update
(Guide)
1.16*
1.16.2
1.16.3
1.16.4
1.16.5
BlockSprite amethyst-cluster.png: Sprite image for amethyst-cluster in Minecraft Caves & Cliffs: Part I
(Guide)
1.17
1.17.1
ItemSprite music-disc-otherside.png: Sprite image for music-disc-otherside in Minecraft Caves & Cliffs: Part II
(Guide)
1.18
1.18.1
1.18.2
BlockSprite sculk-sensor.png: Sprite image for sculk-sensor in Minecraft The Wild Update
(Guide)
1.19
1.19.1
1.19.2
1.19.3
1.19.4

* indicates a reupload | † indicates a lost version | ‡ indicates a version with a variant

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