Jre4Android:Java Runtime& J2ME

Screenshots

About Jre4Android:Java Runtime& J2ME

Jre4Android is a Java Runtime Environment (JRE) for Android that lets you run Java programs, old-school J2ME apps, desktop Swing GUI software, and even host Minecraft servers (PaperMC, Spigot, Bukkit) directly on your phone. It also supports running JAR files in command-line (console) mode, making it useful for both developers and retro gamers.

• Key Features

Run JAR files like java -jar xxx.jar

Run .class files directly (e.g., java Hello)

Run JARs in command-line (console) mode

Support for Java Swing GUI applications

Full support for J2ME (Java ME) JAR files & games

Host and run Minecraft servers (PaperMC, Spigot, Bukkit)

Run Spring Boot JARs on Android

Based on Java 17 (Pro version supports Java 25)

🎮 J2ME Support

Play your favorite classic Java ME mobile games and apps on Android.

Jre4Android also works as a Java emulator, Java runner, and J2ME emulator on Android, allowing you to launch MIDlet-based apps and enjoy retro mobile games seamlessly.

🖥 Swing GUI Support

Run desktop-style Swing applications with full graphical interface on your Android device.

💻 Console Mode

Use Jre4Android like a terminal to execute Java JARs and tools with command-line arguments.

🎮 Minecraft Server Support

Turn your Android device into a portable Minecraft server host!

Jre4Android supports running popular Java-based Minecraft server software:

• PaperMC
• Spigot
• Bukkit

You can:

• Run your own Minecraft server on Android
• Host a server for friends
• Manage server via console
• Install plugins and customize gameplay

Perfect for testing plugins, running small servers, or learning server management.

⚠️ Minecraft Server Setup Tip

When running a Minecraft server for the first time, you may need to accept the EULA (End User License Agreement).

You can do this in two ways:

1. Edit the eula.txt file and set:

eula=true

2. Or add this JVM flag in settings:

• Dcom.mojang.eula.agree=true

Make sure you agree to the official EULA before enabling this option.

👨‍💻 For Developers & Learners

Ideal for testing Java projects, running command-line tools, hosting Minecraft servers, or learning Java programming on the go.

🔗 Pro Version (Java 25 Support)

For advanced users, check out 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

Notes

This application includes functionality based on the open-source project J2ME-Loader (Apache License 2.0).

Information

Frequently Asked Questions