Client.jar

This feature is exclusive to Java Edition.

 

client.jar

{
    "title": "client.jar",
    "rows": [
        {
            "field": "\n* (link to File:Mojang Studios logo.svg article, displayed as x20px|link=Mojang Studios) (link to Mojang Studios article, displayed as Mojang Studios)",
            "label": "Author(s)"
        },
        {
            "field": "(link to File:Windows.svg article, displayed as x20px|Windows|link=wikipedia:Microsoft Windows)<span class=\"os-icon\">(link to File:macOS.svg article, displayed as x10px|macOS|link=wikipedia:macOS|class=darkmode-invert)</span><span class=\"os-icon\">(link to File:Tux.svg article, displayed as x20px|Linux|link=wikipedia:Linux)</span> and other platforms that support running a JVM",
            "label": "Platform(s)"
        },
        {
            "field": "(link to File:Java.svg article, displayed as x20px|Java|link=wikipedia:Java (programming language)) (link to wikipedia:Java (programming language) article, displayed as Java)",
            "label": "Written in"
        },
        {
            "field": "\n* '''Release''': (link to Java Edition_26.2 article, displayed as 26.2)\n* '''Snapshot''': (link to Java Edition_26.3 Snapshot 9 article, displayed as 26.3 Snapshot 9)",
            "label": "Latest version"
        },
        {
            "field": "May 16, 2009 ((link to Java Edition Classic mc-161607 article, displayed as mc-161607))",
            "label": "Release date"
        },
        {
            "field": "\n* ≈ 53 MiB ((link to Java Edition_26.2 article, displayed as 26.2))\n* ≈ 76 MiB (as of (link to Java Edition_26.3 Snapshot 9 article, displayed as 26.3 Snapshot 9))",
            "label": "Size"
        },
        {
            "field": "[https://www.minecraft.net/en-us/eula EULA]",
            "label": "License"
        },
        {
            "field": "Partial",
            "label": "<span available</span>"
        },
        {
            "field": "\n* [https://www.minecraft.net/en-us/download Website] \n'''Downloads'''\n* [https://piston-data.mojang.com/v1/objects/2dc72797acbc1b63fc16a11c4ac393605f453754/client.jar 26.2]\n* [https://piston-data.mojang.com/v1/objects/4815359f45cf77c9042296d98acb22a95df6a58a/client.jar 26.3 Snapshot 9]",
            "label": "Links"
        }
    ],
    "invimages": [],
    "images": [
        "Java Edition 26.2.png"
    ]
}

There is a related tutorial page for this topic!

 

See Tutorial:See Minecraft's code.

client.jar is a JAR file containing the Minecraft program and some default resources. It is launched by the user using the Minecraft Launcher.

The client.jar file is named using the version number after download, e.g., 1.21.5.jar. The name client.jar is used on the distribution server, and commonly as a general term for all versions of the file. It is located at .minecraft/versions/version/version.jar, next to the client.json file.

It can be opened with a file archiving program that supports ZIP files.

The file contains the Minecraft program in form of compiled Java class files. It also contains some, but not all, default resources; for instance, textures from the vanilla resource pack are stored here, but sound files are stored separately.

The client.jar file has the following directory structure. Note that Java class files have been omitted for brevity.

•  version.jar
• •  META-INF: Information for the JVM, including signature information, which may be used to check if the game is modified.
    •  LICENSE
    •  MANIFEST.MF
    •  MOJANGCS.RSA
    •  MOJANGCS.SF
  •  assets: The vanilla resource pack.
    •  minecraft

      •  atlases
      •  blockstates
      •  font
        •  include
      •  items
      •  lang
        •  en_us.json: The default language file.
      •  models
      •  particles
      •  shaders
      •  texts
        •  splashes.txt: Splash text file.
        •  end.txt: End poem text file.
        •  postcredits.txt
        •  credits.json
      •  textures
      •  gpu_warnlist.json: 76 byte file to check and warn about incompatible GPUs.
      •  regional_compliancies.json: 301 byte file to check and warn users in-game playing for too long in South Korea.
    •  .mcassetsroot: Empty file identifying the vanilla resource pack.
  •  com
    •  mojang
      •  blaze3d
      •  realmsclient
      •  math
  •  data: The vanilla data pack.
    •  minecraft

      •  advancement
      •  banner_pattern
      •  cat_variant
      •  chat_type
      •  chicken_variant
      •  cow_variant
      •  damage_type
      •  datapacks
        •  minecart_improvements: The Minecart Improvements data pack.
        •  redstone_improvements: The Redstone Improvements data pack.
        •  trade_rebalance: The Villager Trade Rebalance data pack.
      •  dialog
        •  custom_options.json
        •  quick_actions.json
        •  server_links.json
      •  dimension_type
      •  enchantment
      •  enchantment_provider
        •  raid
      •  frog_variant
      •  instrument
      •  jukebox_song
      •  loot_table
      •  painting_variant
      •  pig_variant
      •  recipe
      •  structure: Structure data.
      •  tags
      •  test_environment: Introduced in 1.21.5.
      •  test_instance: Introduced in 1.21.5.
      •  timeline: Timeline data.
      •  trade_set
      •  trial_spawner: Trial spawner data. Introduced in 1.21.
      •  trim_material
      •  trim_pattern
      •  villager_trade
      •  wolf_variant
      •  wolf_sound_variant
      •  world_clock
      •  worldgen
      •  zombie_nautilus_variant
    •  .mcassetsroot: Empty file identifying the vanilla data pack.
  •  net
    •  minecraft
      •  client
      •  data
      •  obfuscate
      •  server
      •  util
  •  flightrecorder-config.jfc
  •  pack.png: Vanilla resource pack and data pack icon.
  •  version.json

Blaze3D is a private library that provides the graphics backend for LWJGL/OpenGL and Vulkan^[1] used in the game's rendering, while also providing some low-level abstraction for OpenAL and glyph typographic information for audio control and fonts respectively.

When used for rendering, Blaze3D sets up the render system and the graphics backend, managing the program's window, GPU devices, memory buffers, view states, and other resources. When used for audio, it provides audio devices, channeling, and playback control for the game's own sound engine.

In the future, Mojang Studios plans to rework the codebase, which includes separating the game's rendering and gameplay codebase,^[2] and a dedicated thread for rendering^[3].

• Bedrock Edition installation files, which contain the game client executable for Bedrock Edition.
• .minecraft
• server.jar