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J2ObjC

  * J2ObjC

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J2ObjC

  * J2ObjC

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    J2ObjC

What J2ObjC is

J2ObjC is an open-source command-line tool from Google that
translates Java source code to Objective-C for the iOS (iPhone/iPad)
platform. This tool enables Java source to be part of an iOS
application's build, as no editing of the generated files is
necessary. The goal is to write an app's non-UI code (such as
application logic and data models) in Java, which is then shared by
web apps (using GWT), Android apps, and iOS apps.

Get Started

J2ObjC supports most Java language and runtime features required by
client-side application developers, including exceptions, inner and
anonymous classes, generic types, threads and reflection. JUnit test
translation and execution is also supported.

What J2ObjC isn't

J2ObjC does not provide any sort of platform-independent UI toolkit,
nor are there any plans to do so in the future. We believe that iOS
UI code needs to be written in Objective-C, Objective-C++ or Swift
using Apple's iOS SDK (Android UIs using Android's API, web app UIs
using GWT, etc.).

J2ObjC cannot convert Android binary applications. Developers must
have source code for their Android app, which they either own or are
licensed to use.

Requirements

  * JDK 1.8 or JDK 11 (see announcement)
  * Mac workstation or laptop
  * Mac OS X 10.14 or higher
  * Xcode 11 or higher

Except as otherwise noted, the content of this page is licensed under
the Creative Commons Attribution 4.0 License, and code samples are
licensed under the Apache 2.0 License. For details, see the Google
Developers Site Policies. Java is a registered trademark of Oracle
and/or its affiliates.

Last updated 2020-10-15 UTC.

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