Jar Runner

Jar Runner lets you run compatible JAR files, CLASS files, Java command-line programs, Swing GUI applications, and J2ME apps directly on your Android device.

Jar Runner was previously known as Jre4Android.

Use your phone as a portable environment for running Java applications, JAR files, and classic J2ME software. JAR Runner is useful for developers, students, retro mobile software users, and anyone who needs to run compatible Java programs on Android.

Key Features

Run JAR Files

Open and run compatible Java JAR files on Android, similar to using the java -jar command on a desktop system.

Run CLASS Files

Run compiled .class files directly, including simple Java programs and examples.

Console Mode

Run compatible command-line applications and view their output in a terminal-style console.

Swing GUI Support

Launch many compatible Java Swing applications with graphical user interface support.

J2ME Support

Run supported Java ME / J2ME applications and games. JAR Runner includes support for compatible MIDlet-based software.

Java Runtime

Use a local runtime environment for learning, testing, and running compatible Java applications and tools.

Developer Friendly

Useful for testing Java programs, running small tools, learning Java programming, and experimenting with JAR and CLASS files.

Community Support

Questions or feedback? Join our community:

https://github.com/coobbi/Jre4android/discussions

Important Notice

Compatibility depends on the application, required libraries, device capabilities, and runtime version. Some desktop Java applications may not work correctly, especially applications that depend on unsupported native libraries or desktop-specific features.

Open Source Notice

This application includes functionality based on the open-source J2ME-Loader project, licensed under the Apache License 2.0.

Jar Runner is an independent third-party application and is not affiliated with or endorsed by Oracle or Google.

Java is a registered trademark of Oracle and/or its affiliates.

Android is a trademark of Google LLC.