Java

Lesson in the Android Developer Roadmap · Stage 1: Pick a Language

Last updated 14 September 2026

What is Java?

Java was the original language for Android development and remains supported on the Android platform. It is a statically typed, object-oriented language that runs on the JVM. Many existing Android codebases and libraries are written in Java, so familiarity with it is still valuable even for developers working primarily in Kotlin.

Study this in the interactive course See the whole Android roadmap

Free resources to learn Java

Java: common questions

Can I learn Java in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Java in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Java tutorial for beginners?

It is lesson 3 of 113 in the free Android roadmap, in stage 1, Pick a Language. If you are new to Android, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.