A daily updated filename extension database!

JAR file extension

The table below provides useful information about the .jar file extension. It answers questions such as:

  • What is the .jar file?
  • What program do I need to open a .jar file?
  • How can the .jar file be opened, edited or printed?
  • How can I convert .jar files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Java Archive

The JavaTM Archive file format enables you to bundle multiple files into a single archive file. Typically a JAR file contains the class files and auxiliary resources associated with applets and applications.
Category: Archive files
Mime-type: application/java-archive
Magic number: -
Magic string: -
Sample: -
JAR aliases:
JAR related links:
JAR related extensions:
Java Source Code

JRun Server Application

Java Enterprise Archive

Java Manifest File

Java Application Descriptor

BlackBerry COD Archive

Java Serialized Object

Digital Signature

Java Web Archive

Velocity Macro File

Other types of files may also use the .jar file extension.

🚫 The .jar file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ajr, ar, har, iar, ja, jad, jaf, jag, jat, jr, jra, jwr, jxr, kar, mar

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

JpgfDraw Drawing ASCII
E-Sword Harmony Resource
HTTP Archive
EMC NaviSphere Analyzer Archive
AGICO JR-5 Spinner Data
Java Application Descriptor
Midtown Madness 2 Game Data
Uniface Deployment Archive
Rocket LegaSuite GUI Runtime

🔴 Can't open a .jar file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .jar file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .jar file extension, write to us!

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Browser: Abbreviation Application Archive Audio Configuration Data Development Disk Image Document Ebook Font Game Data GIS Graphic Malware Multimedia Other Project Scam Unknown Video
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