The meaning of the Acronym JAR is...

JAR is

• Just Another Rifle

More Meanings For JAR:

• Java Archive (compressed JAVA class files)
• Journal of Automated Reasoning
• Java Archive (compressed JAVA class files)
• Just Acting Right
• Joint Aviation Requirements
• Joint Aviation Requirement
• Joint Airworthiness Requirements
• Just Another Rifle
• Jason Andrew Relva
• Journal of Automated Reasoning

JAR is also in:

• Chat
• Famous
• File Extensions
• General
• Media
• Military
• Software
• Transportation
• US Government