Explore Java for mobile app development: how to create Android apps in 2025 with this reliable programming language.

Java is one of the top three programming languages, thanks to its dominance in enterprise applications, while Kotlin is a less popular but still top 20 programming language. Meta's switch away ...

That’s why Android app makers have embraced Kotlin as Java 2.0. Based on the fundamentals of Java, Kotlin is a new-school language that fixes a lot of the problems developers have with Java.

To make Android apps, Java and Kotlin are not enough. You'll also need to get to grips with the XML markup language - a powerful script for organizing data and creating layouts.

Developers can reuse their Web code, Windows desktop applications (.NET code), Android apps (Java and C++), and iOS apps (Objective C).