JAR

A JAR file contains Java classes and associated metadata and resources; it is often executed as a program by the Java Virtual Machine (JVM).

In Minecraft, it may refer to:

• 👁 File file.png: Sprite image for file in Minecraft
   client.jar – a JAR file that contains the game program and assets of Minecraft: Java Edition.
• 👁 File file.png: Sprite image for file in Minecraft
   server.jar – a JAR file that only contains the resources necessary to run a Java Edition server.

• JAR (file format) on Wikipedia