For years, Java was the default language for Android development. Today, Kotlin is Google's recommended language for new Android apps — but Java is still extremely common in existing codebases.
1. Kotlin is generally the better starting point today
Kotlin was designed to be more concise and beginner-friendly than Java while remaining fully compatible with it. For someone starting fresh with Android in mind, Kotlin is usually the more efficient choice.
2. Java is still worth knowing, just not necessarily first
A huge amount of existing Android code, and many other systems entirely unrelated to Android, is written in Java. Learning it later, once you understand core programming concepts through Kotlin, tends to be fairly quick.
3. The core concepts overlap heavily
Both languages are object-oriented and share many underlying concepts, so time spent learning one isn't wasted if you eventually need the other.
4. Learn Android development, not just the language
Regardless of which language you pick, Android development also requires learning Android Studio and Android's app architecture — budget real time for this alongside the language itself.
5. Build a simple app as your first real project
A basic note-taking or list app is a realistic, achievable first Android project that touches most of the core concepts you'll need going forward.
Frequently Asked Questions
Should I learn Kotlin or Java for Android development?
Kotlin is generally the better starting point today, since it's Google's recommended language for new Android apps and is more concise than Java.
Is Java still useful for Android development?
Yes — a large amount of existing Android code is written in Java, so it's still worth learning, just not necessarily first.