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{{Underscore title|Java Edition Classic 0.0.21a_01}}
{{Lost version}}
{{Infobox version
|title=0.0.21a_01
|version_id=Classic 0.0.21a_01
|image=Classic 0.0.21a_01.png
|edition=java
|prefix=Classic
|phase=Classic
|server=[[Minecraft:Java Edition Classic server 1.8.2|1.8.2]]
|date=June 23, 2009
|clientdl=Client not archived
|prevparent= 0.0.21a
|nextparent= 0.0.22a
}}

'''0.0.21a_01'''<ref>{{ytl|X4yxFrnbXTk|MineCraft house tour|Chantaru413|June 26, 2009}}</ref><ref>https://oi194.photobucket.com/albums/z61/ninjachuck385/cavern3.png</ref><ref>https://www.youtube.com/watch?v=DrkcrYoxl3Y</ref><ref>https://www.youtube.com/watch?v=R-RicZjBaXk</ref><ref>https://www.youtube.com/watch?v=8Xv4XU9D4DY</ref> is a version of [[Minecraft:Java Edition Classic]] released on June 23, 2009, at 16:17 UTC to try to fix a "hang bug" by adding a max iterations to the clipping.<ref name=0.0.21a_01 /><ref>[[#logs|IRC logs]]: "''A11:17:11 <08Notch> client 0.0.21a_01 is up, fixing the hang bug''" (16:17:11 UTC)</ref>

== Fixes ==
* Attempted to fix a "hang bug" by adding a max iterations to the clipping.<ref name=0.0.21a_01>[[Minecraft:wordofnotch:128808577|"Is the hang bug fixed in 0.0.21a_01?"]] – The Word of Notch, June 23, 2009</ref><ref>[[#logs|IRC logs]]: "''A11:40:57 <08Notch> the only difference between 0.0.21a and _01 is that I added a max iterations on the clipping''" (16:40:57 UTC)</ref>
** However, the game still hangs. As the problem made worse, performance is now much lower than in previous versions.<ref>[[#logs|IRC logs]]: "''A11:24:10 <08Notch> so it still hangs? :-O [...] A11:24:14 <akuryo> yeah notch''" (16:24 UTC)</ref>

== Gallery ==
<gallery>
AlexVMiner's Spleef Arena.png
Cavern 1.png
Cavern 3.png
21a01 webpage.png|The ''Minecraft'' webpage with this version
Minecraft Webpage 0.0.21a 01.png
Classic 0.0.21a 01 Ship.jpg
Classic 0.0.21a 01 screenshot2.png
21a01tower.png
21a01server.png
21a01prison.jpg
21a01-11.jpg
21a01-12.jpg
21a01-13.png
21a01-14.png
21a01-15.png
21a01-16.jpg
21a01-17.jpg
21a01-18.jpg
21a01-19.jpg
21a01-20.jpg
21a01-21.png
21a01-22.png
21a01-23.jpg
21a01-24.jpg
21a01-25.jpg
Spleefarena2.png
Classic 0.0.21a 01 screenshot3.png
Classic 0.0.21a 01 screenshot4.png
Classic 0.0.21a 01 screenshot5.png
Classic 0.0.21a 01 screenshot6.png
Classic 0.0.21a 01 screenshot7.png
Classic 0.0.21a 01 screenshot8.png
Dither2.jpg
Outside.png
Inside Spleef Area.png
Stump beginning.png
Arena (1).PNG
MineCraft Planet Earth.jpg|[https://www.youtube.com/watch?v=c74D7kQywBY&t=101s "MineCraft Earth"]
Stump example.png
Classic 0.0.21a 01 server.png
0.0.21a 01 Dropshock.png
0.0.21a 01 indyskyz.jpg
</gallery>

== References ==
* {{anchor|logs}}[https://archive.org/download/Minecraft_IRC_Logs_2009/DBN-IRC-Logs/ IRC logs] on Archive.org; #minecraft.20090623.log. June 23, 2009 (UTC−5).
{{Reflist}}

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

[[Category:Java Edition Middle Classic versions]]
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Minecraft:Java Edition Classic 0.0.21a 01 - Revision history

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