Java & Kotlin Compiler IDE

Write, compile, and run Java and Kotlin code directly on your Android device. Java & Kotlin Compiler IDE is an offline compiler, code editor, and lightweight IDE built for students, learners, and developers who want real code execution without opening a laptop. Java & Kotlin Compiler IDE runs code on-device. No cloud compiler, no account setup, and no remote execution. Open a file, write code, tap Run, and see output in the built-in console.

WHAT YOU CAN DO

• Compile and run Java programs offline
• Create and run Kotlin files with the on-device Kotlin compiler
• Work with single files or complete multi-file Java projects
• Learn from a large example library covering basics, OOP, algorithms, patterns, and Kotlin
• Use Notebook mode for Java experiments with runnable cells
• Install common libraries with one tap, including Gson, Jsoup, Apache Commons, and more
• Import your own JAR files and add them to the classpath
• Preview local Java web apps inside the app
• Edit comfortably with dark themes, syntax highlighting, search, snippets, and formatting

JAVA AND KOTLIN COMPILER
Java & Kotlin Compiler IDE is built for hands-on programming. Run Java classes, snippets, algorithms, and project files from your phone. Kotlin support lets you create .kt files, run top-level main functions, try data classes, collections, extension functions, DSL patterns, and Kotlin examples.

MULTI-FILE PROJECTS
Build complete Java projects instead of only one-file demos. Use the project file tree, open source files, and run the whole project together. The bundled RPG showcase demonstrates classes split across multiple files so learners can see how real Java projects fit together.

NOTEBOOK MODE
Experiment with Java in runnable cells. Keep ideas, examples, and outputs together while learning syntax, debugging logic, or preparing for coding interviews.

LIBRARIES AND JARS
When your code imports a known library, Java & Kotlin Compiler IDE can suggest the matching dependency and install it for you. Use JSON parsing, HTML parsing, file helpers, text utilities, and your own JAR files without leaving the editor.

LOCAL WEB PREVIEW
Write a Java WebApp class, run it, and open the generated local preview inside Java & Kotlin Compiler IDE. It is useful for learning request handling and prototyping small web tools from your phone.

EDITOR FEATURES
The editor includes syntax highlighting for Java and Kotlin, auto-indent, search and replace, snippets, templates, line numbers, formatting, file history, sharing, and a terminal-style output console.

WHO IT'S FOR
• Students learning Java, Kotlin, OOP, and data structures
• Android learners who want to practise Kotlin syntax
• Developers testing algorithms or small utilities on the go
• Interview prep users practising DSA in real Java
• Anyone who wants an offline Java compiler and Kotlin code runner on Android

FREE WITH OPTIONAL PRO
Java & Kotlin Compiler IDE is free to install and use. Ads support development. A one-time Pro upgrade removes ads, unlocks advanced library search, and unlocks Pro editor themes. No subscription is required.

LANGUAGES
The interface supports 15 languages including English, Spanish, Portuguese, French, German, Russian, Hindi, Bengali, Indonesian, Turkish, Urdu, Arabic, Chinese, Japanese, and Korean.

Built by Cosmovex, makers of JSONVEdit, HTMLVEdit, XMLVEdit, CSVVEdit, and the VEdit family of offline editors.

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