This already has been done for iOS, based on Java 11. Using the GraalVM Native Images and OpenJDK classes, developers can create applications that follow Apple rules. Java developers would not have to learn Objective-C or Swift to write software for iOS.

Which programming language is used in iOS?

The powerful programming language that is also easy to learn. Swift is a powerful and intuitive programming language for macOS, iOS, watchOS, tvOS and beyond.

Is iOS written in C?

After Android, iOS is the most used mobile OS on Earth, available in 40 different languages. It is written in C, C++, Objective-C and Swift. The OS is closed source instead of open source and it is based on the Macintosh OS X.