Jre4Android is a Java Runtime Environment for Android that lets you run JAR files, CLASS files, Java command-line programs, Swing GUI apps, and J2ME apps directly on your Android device.
Use your phone as a portable Java runner, Java emulator, JAR runner, and J2ME emulator. Jre4Android is useful for developers, students, retro mobile game fans, and anyone who wants to run Java programs on Android.
Key Features
Run JAR Files
Open and run Java JAR files on Android, similar to using java -jar on a desktop system.
Run CLASS Files
Run compiled .class files directly, such as simple Java programs and examples.
Console Mode
Run Java command-line tools and view output in a terminal-style console.
Swing GUI Support
Launch many desktop-style Java Swing applications with graphical interface support.
J2ME Support
Run classic Java ME / J2ME apps and games on Android. Jre4Android can work as a J2ME emulator for supported MIDlet-based apps.
Java Runtime on Android
Use a Java runtime environment on your Android device for learning, testing, and running Java tools.
Minecraft Server Support
Jre4Android can run Java-based server software such as PaperMC, Spigot, and Bukkit when compatible with your device and runtime environment.
Developer Friendly
Useful for testing Java projects, running small tools, learning Java programming, and experimenting with Java on Android.
Free and Pro Version
The free version supports Java 17.
Jre4Android Pro provides additional features, no ads, custom arguments, and Java 25 support.
Jre4Android Pro:
https://play.google.com/store/apps/details?id=com.coobbi.jre.pro
Community Support
Questions or feedback? Join our community:
https://github.com/coobbi/Jre4android/discussions
Important Notice
Compatibility depends on the Java program, required libraries, Android device, and runtime version. Some desktop Java applications may not work perfectly on Android.
Minecraft, PaperMC, Spigot, and Bukkit are mentioned only to describe compatible Java server software. Jre4Android is an independent tool and is not affiliated with Mojang, Microsoft, PaperMC, Spigot, or Bukkit.
Open Source Notice
This application includes functionality based on the open-source project J2ME-Loader, licensed under the Apache License 2.0.