JavaDroid

JavaDroid is a Java IDE for Android

Write, compile, run, and debug Java and Kotlin code directly on your phone or tablet. JavaDroid is a full-featured IDE that turns your Android device into a portable development environment — no computer needed.

Code Editor

• Syntax highlighting for Java, Kotlin, C++, XML, Gradle, JSON, Bash, and Markdown

• Find & replace, word wrap, line numbers, auto-save

• Split screen — edit two files side by side

• Customizable fonts, colors, and editor settings

• Auto-import — missing Java imports are added automatically

• Code formatting on save

Compiler & Runtime

• On-device compilation via ECJ (Eclipse Compiler for Java) + D8 dexer

• Maven project support — create projects, manage dependencies, package and test

• Kotlin compilation via K2JVMCompiler with syntax highlighting

• JNI / native C/C++ compilation via built-in TCC and NDK clang++

• Bundled android.jar — compile Android-compatible code

Debugger

• Set breakpoints on any line by tapping the gutter

• Conditional breakpoints with custom expressions

• Step over, step into, step out with stack depth tracking

• Inspect local variables, call stack, and watch expressions

• Evaluate arbitrary expressions at any breakpoint

• Visual debug line highlighting

Bytecode Viewer

• View compiled Java bytecode in javap-style format

• Browse class hierarchy, fields, methods, and instructions

• Stack map frames, bootstrap methods, and annotations

Learn Center

• Built-in Java courses with bilingual support (Ukrainian/English)

• Java reference: 15 chapters from basics to Stream API

• Enterprise essentials: Concurrency, JVM Memory, SQL, JDBC, Web

• Code examples you can run directly in the editor

Git Integration

• Full Git support via JGit — no root required

• Init, clone, commit, pull, push, branches, log

• Stage/unstage individual files

Library Manager

• Search Maven Central and add dependencies instantly

• Browse versions and add to your project in one tap

Tools

• JSON/XML formatter with syntax highlighting

• Markdown preview with code block highlighting

• Native C/C++ module creation

Localization

• 11 languages: English, Ukrainian, German, French, Spanish, Polish, Romanian, Azerbaijani, Hindi, Igbo, Yoruba, Hausa

Requirements

• Android 8.0 or higher

• Internet connection for Maven dependencies and Git operations