Filestar*
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Convert ar to jar

  1. Download and install the latest version of Filestar.

  2. Right click on one or more Ar file(s) on your desktop and select Convert with Filestar.

  3. Type convert to jar in the search box.

  4. Press Convert.

  5. Or let an AI agent do it: filestarcli -i file.ar -c "convert to jar" (how).

Let your AI agent convert AR to JAR

Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.

Install Filestar and add it to your agents:

npm install -g filestar
filestarcli agent install

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the AR files in my Downloads folder to JAR”

Or run it yourself:

filestarcli -i file.ar -c "convert to jar"

Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.

Can my AI agent convert AR to JAR?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.ar -c "convert to jar" on your computer, so your files stay on it.

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .ar and .jar?

Name
Linux/Unix Command Library Format
Java Archive File
Extension
.ar
.jar
Format
Binary
Binary
Category
Compressed
Developer
Developer
AT&T Bell Laboratories
Oracle
Description
AR is a Unix archive file that is purposely used to develop and update static library files for creating .deb packages. Currently, its been replaced by .tar archive file for everything except static libraries.
A JAR file is a Java archive (JAR) file used by the Java Runtime Environment (JRE), a framework used for executing Java programs. JAR files may serve as program libraries or as standalone programs that run if the JRE is installed on the computer or mobile device.
MIME Type
application/x-archive
application/java-archive
Sample
sample.jar
Wikipedia
.ar on Wikipedia
.jar on Wikipedia

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