Minecraft Wiki
Note: This version is not available in the launcher and is considered lost.

0.0.19a_01 was a version of Java Edition Classic released on June 19, 2009, between 23:28 and 23:36 UTC.[1][2]


  • Glass
    • Texture changed from Glass JE1 (Glass JE1 recreation) to Glass JE2[3][4]
    • Glass is no longer semi transparent.
      • This means that glass will no longer go invisible when selected, when looked at through water or when underground.
  • Sponge
    • No longer decays.[5]
    • Fixed some bugs that caused water to flow back onto a sponge.[verify][6]
    • Fixed bug causing sponges to block lava flooding.[verify]


  • June 19 IRC logs: IRC logs on Archive.org; #minecraft.20090619.log. June 19, 2009 (UTC−5).
  • June 22 IRC logs: IRC logs on Archive.org; #minecraft.20090622.log. June 22, 2009 (UTC−5).
  1. June 19 IRC logs: "P6:28:41 <Snowman> Notch, dont forget to change the version number :D" (23:28:41 UTC)
  2. June 19 IRC logs: "P6:36:49 <Fishlips> loving the new glass" (23:36 UTC)
  3. June 19 IRC logs: "P5:59:14 <Notch> I might just revert the glass to the horrible non-transparent texture from the screenshot" [...] "P5:59:49 <Evil-Ville> I actually liked the old glass more Notch" [...] "P6:19:32 <Notch> I'm switching glass to a non-semi-trasparent texture" [...] "P6:25:51 <Redshift> yeah windows definitely need to be less opaque, personally i think they should have no texture, and just a slight hint of opacity" (22:59 to 23:25 UTC) | "the screenshot" refers to "Glass (looks pretty bad..) and sponge!" – Notch, June 16, 2009, Tumblr | The opaque glass texture refers to the Glass JE1 0.0.19a texture.
  4. June 22 IRC logs: P1:17:31 <Haruhi2> the version that was semi-opaque looked more like ice than glass [...] then the version after that was fine [...] then he changed it a bit and now it doesn't really look like either
  5. June 19 IRC logs: P6:18:11 <Notch> should I take out the random vanish? [...] consider it done
  6. June 19 IRC logs: P6:00:40 <liq3> OH I see. Make sure thehre's a level of water above both sponges and it'll flood the remaining one. [...] Notch: You going to be able to hotfix it? [...] P6:02:10 <Notch> maybe..