In 2025, Java continues to be a reliable and well-supported option for mobile app developers, particularly those targeting the Android ecosystem.

How to build your first Android app in 10 days. From the initial ideation to publishing to the Play Store, just follow the steps!

Here's what Meta's developers have learned from moving their code base from the Java programming language over to Kotlin.

This is what libraries in Android Studio are for. They simply extend the capabilities of Java/Kotlin/the Android SDK by letting you use classes and methods built by other users.