Minecraft:Java Edition Classic 0.0.20a 01 - Revision history

SyncBot: Sync: updated from Minecraft

2026-07-17T11:09:09Z

Sync: updated from Minecraft

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	=== Gameplay ===		=== Gameplay ===
	'''[[Minecraft:Hotbar]]'''		'''[[Minecraft:Hotbar]]'''
	* [[Minecraft:Cobblestone]] ~~positions are now switched to second slot in the hotbar.<ref>[[#logs\|IRC logs]]: "''P5:05:09 <mezo> notch, in the last version dirt was 2~~ and ~~cobble was 3, now it's the other way around''" [...] "''P5:05:23 <Notch> ah! that's intentional, mezo''" (22:05 UTC)</ref>~~		* [[Minecraft:Cobblestone]] and [[Minecraft:dirt]] positions are now switched to second and third slot respectivly in the hotbar.<ref>[[#logs\|IRC logs]]: "''P5:05:09 <mezo> notch, in the last version dirt was 2 and cobble was 3, now it's the other way around''" [...] "''P5:05:23 <Notch> ah! that's intentional, mezo''" (22:05 UTC)</ref>
	* [[Minecraft:~~Dirt~~]] positions are now switched to third slot in the hotbar.<ref>[[#logs\|IRC logs]]: "''P5:05:09 <mezo> notch, in the last version dirt was 2 and cobble was 3, now it's the other way around''" [...] "''P5:05:23 <Notch> ah! that's intentional, mezo''" (22:05 UTC)</ref>

	== Fixes ==		== Fixes ==

SyncBot: Sync: updated from Minecraft

2026-06-25T11:16:29Z

Sync: updated from Minecraft

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	\|image=Classic 0.0.20a_01.png		\|image=Classic 0.0.20a_01.png
	\|edition=java		\|edition=java
	~~\|prefix=Classic~~
	\|phase=Classic		\|phase=Classic
	\|date=June 20, 2009		\|date=June 20, 2009
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	\|jsondl=[https://meta.celestia.sh/versions/v1/c0.0.20a_01.json .json]		\|jsondl=[https://meta.celestia.sh/versions/v1/c0.0.20a_01.json .json]
	\|serverdl=[[Minecraft:Java Edition Classic server 1.8.2\|Server]]		\|serverdl=[[Minecraft:Java Edition Classic server 1.8.2\|Server]]
			\|appletpage=minecraft.net/play.jsp
			\|prefix=Classic
	\|prevparent= 0.0.20a		\|prevparent= 0.0.20a
	\|next= 0.0.20a_02		\|next= 0.0.20a_02

SyncBot: Sync: updated from Minecraft

2026-06-24T11:17:27Z

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	{{Navbox Java Edition versions\|Classic}}		{{Navbox Java Edition versions\|Classic}}

	[[Category:Java Edition Classic ~~Multiplayer Test~~ versions]]		[[Category:Java Edition Middle Classic versions]]

	[[Minecraft:de:Classic 0.0.20a 01]]		[[Minecraft:de:Classic 0.0.20a 01]]

SyncBot: Sync: updated from Minecraft

2026-06-15T11:11:22Z

Sync: updated from Minecraft

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	\|next= 0.0.20a_02		\|next= 0.0.20a_02
	\|nextparent= 0.0.21a		\|nextparent= 0.0.21a
	}}~~<onlyinclude>~~		}}

	'''0.0.20a_01'''<ref>http://web.archive.org/web/20181207044622/http://tinypic.com/view.php?pic=2lvlc14&s=5</ref> is a version of [[Minecraft:Java Edition Classic]] released alongside server version [[Minecraft:Java Edition Classic server 1.8.2\|1.8.2]] on June 20, 2009, at 21:11 UTC to fix bugs.<ref name="blog">https://web.archive.org/web/20090926233412/http://notch.tumblr.com/post/127176580/new-minecraft-server-zip-new-client New minecraft-server.zip, new client - June 20, 2009 – This blog post mentions that it fixed players being able to build using unbreakable blocks, which is also mentioned in the [[#logs\|IRC logs]]: "''P4:09:25 <Notch> new minecraft-server.zip that doesn't allow that block''" (21:09:25 UTC), therefore the blog post ''does'' refer to this version.</ref><ref>[[#logs\|IRC logs]]: "''P4:11:32 <Awol10> wingboy: tried downloading again. the jar file should have an 11:09pm timestamp''" (21:11:32 UTC)</ref>		'''0.0.20a_01'''<ref>http://web.archive.org/web/20181207044622/http://tinypic.com/view.php?pic=2lvlc14&s=5</ref> is a version of [[Minecraft:Java Edition Classic]] released alongside server version [[Minecraft:Java Edition Classic server 1.8.2\|1.8.2]] on June 20, 2009, at 21:11 UTC to fix bugs.<ref name="blog">https://web.archive.org/web/20090926233412/http://notch.tumblr.com/post/127176580/new-minecraft-server-zip-new-client New minecraft-server.zip, new client - June 20, 2009 – This blog post mentions that it fixed players being able to build using unbreakable blocks, which is also mentioned in the [[#logs\|IRC logs]]: "''P4:09:25 <Notch> new minecraft-server.zip that doesn't allow that block''" (21:09:25 UTC), therefore the blog post ''does'' refer to this version.</ref><ref>[[#logs\|IRC logs]]: "''P4:11:32 <Awol10> wingboy: tried downloading again. the jar file should have an 11:09pm timestamp''" (21:11:32 UTC)</ref>

SyncBot: Sync: new page from Minecraft

2026-06-10T11:12:45Z

Sync: new page from Minecraft

New page

{{Underscore title|Java Edition Classic 0.0.20a_01}}{{Infobox version
|title=0.0.20a_01
|image=Classic 0.0.20a_01.png
|edition=java
|prefix=Classic
|phase=Classic
|date=June 20, 2009
|server=[[Minecraft:Java Edition Classic server 1.8.2|1.8.2]]
|clientdl=[https://vault.omniarchive.uk/archive/java/client-classic/c0.0.20a_01.jar Client]
|jsondl=[https://meta.celestia.sh/versions/v1/c0.0.20a_01.json .json]
|serverdl=[[Minecraft:Java Edition Classic server 1.8.2|Server]]
|prevparent= 0.0.20a
|next= 0.0.20a_02
|nextparent= 0.0.21a
}}<onlyinclude>

'''0.0.20a_01'''<ref>http://web.archive.org/web/20181207044622/http://tinypic.com/view.php?pic=2lvlc14&s=5</ref> is a version of [[Minecraft:Java Edition Classic]] released alongside server version [[Minecraft:Java Edition Classic server 1.8.2|1.8.2]] on June 20, 2009, at 21:11 UTC to fix bugs.<ref name="blog">https://web.archive.org/web/20090926233412/http://notch.tumblr.com/post/127176580/new-minecraft-server-zip-new-client New minecraft-server.zip, new client - June 20, 2009 – This blog post mentions that it fixed players being able to build using unbreakable blocks, which is also mentioned in the [[#logs|IRC logs]]: "''P4:09:25 <Notch> new minecraft-server.zip that doesn't allow that block''" (21:09:25 UTC), therefore the blog post ''does'' refer to this version.</ref><ref>[[#logs|IRC logs]]: "''P4:11:32 <Awol10> wingboy: tried downloading again. the jar file should have an 11:09pm timestamp''" (21:11:32 UTC)</ref>

== Changes ==
=== Gameplay ===
'''[[Minecraft:Hotbar]]'''
* [[Minecraft:Cobblestone]] positions are now switched to second slot in the hotbar.<ref>[[#logs|IRC logs]]: "''P5:05:09 <mezo> notch, in the last version dirt was 2 and cobble was 3, now it's the other way around''" [...] "''P5:05:23 <Notch> ah! that's intentional, mezo''" (22:05 UTC)</ref>
* [[Minecraft:Dirt]] positions are now switched to third slot in the hotbar.<ref>[[#logs|IRC logs]]: "''P5:05:09 <mezo> notch, in the last version dirt was 2 and cobble was 3, now it's the other way around''" [...] "''P5:05:23 <Notch> ah! that's intentional, mezo''" (22:05 UTC)</ref>

== Fixes ==
'''3 bugs fixed'''
* Fixed a bug that caused clients to build unbreakable blocks.<ref name="blog"/>
* Fixed a protocol error.<ref name="blog"/>
* Fixed FPS issues.<ref name="FPS and water">[[#logs|IRC logs]]: "''P4:13:25 <Notch> does it work better now?''" [...] "''P4:13:36 <LKA> Notch: FPS is fine now but water transparency is broken now''" (21:13 UTC)</ref>

== Bugs ==
'''5 bugs reported'''
* Water transparency is bugged.<ref name="FPS and water"/><ref>[[#logs|IRC logs]]: "''P4:12:28 <LKA> water transparency is being hilariously awkward''" (21:14:23 UTC)</ref>
** Sometimes, the water looks opaque.<ref>[[#logs|IRC logs]]: "''P4:14:23 <LKA> I dunno, for me sometimes the water is opaque then I look down from the surface and I can see through it just fine''" (21:14:23 UTC)</ref>
** Water tiles have light blue bits in their borders.<ref>[[#logs|IRC logs]]: "''P4:16:04 <Syndlig> Looking straight down at water...''" [...] "''P4:16:08 <Syndlig> It turns into a grid.''", "''P4:16:14 <Syndlig> Light blue lines at the corners of the water tiles.''" [...] "''P4:16:38 <Notch> yeah, water tiles have weird borders''" [...] "''P4:17:26 <LKA> It goes through various shades of opaqueness''" (21:16 to 21:17 UTC)</ref>
* Usernames are now harder to read.<ref>[[#logs|IRC logs]]: "''P4:14:32 <paul|2> I'm getting errors with names''" [...] "''P4:14:38 <paul|2> the dropshadow gets a bit weird''" [...] "''P4:28:04 <Syndlig> The closer a player is to you the whiter their name gets.''" [...] "''P4:28:12 <Syndlig> If they're next to you the name is white-on-white and unreadable.''" [...] "''P4:29:38 <wingboy> the names above peoples head look weird''" [...] "''P4:30:30 <ez> yes, names look odd''" (21:24 to 21:28 UTC)</ref>
* If the player aims at a certain angle while placing a block, it appears to go inside an existing block,<ref>[[#logs|IRC logs]]: "''P4:52:16 <Kapow> if you aim at a certain angle it wants to build the new block inside the existing one''" (21:52 UTC)</ref> due to a bug caused by using OpenGL picking.
** Specifically, looking at [[Minecraft:glass]] or [[Minecraft:leaves]] causes this bug to happen.

== Gallery ==
<gallery>
20a01water.png|Lines in the water in this version
Classic 0.0.20a_01 boat.png|A boat
0.0.20a 01original.png|A player
0.0.20a 01 huge world.png|Huge world size
0.0.20a 01 blocks.png|Blocks in this version
20a01glass.png|The bug mentioned in bugs section
</gallery>

== References ==
* {{anchor|logs}}[https://archive.org/download/Minecraft_IRC_Logs_2009/DBN-IRC-Logs/ IRC logs] on Archive.org; #minecraft.20090620.log. June 20, 2009 (UTC−5).
{{reflist}}

== Navigation ==
{{Navbox Java Edition versions|Classic}}

[[Category:Java Edition Classic Multiplayer Test versions]]

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