Does React Native use Java?

As React Native is written in JavaScript , it’s easy to onboard other teams. The UI of iOS and Android apps is platform-specific, giving the apps a native feel and a smooth UX.

It uses Javascript to render the app’s user interface, but using native-OS views. React Native also allows you to implement code in OS-native languages like: Java and Kotlin for Android and Objective-C or Swift for iOS.

Having a solid foundation will give you a head start in learning and also help you debug and troubleshoot issues faster. To prepare for learning React Native, you can also learn a bit about Java and Swift or Objective-C languages as these are the underlying native programming languages for Android and iOS development.