Type parameters

Lesson in the Scala Roadmap · Stage 5: Conditionals

Last updated 14 September 2026

What is Type parameters?

Type parameters are used to create generic classes, traits, and methods. Type parameters are enclosed in square brackets and can be used to define methods and classes that work with different types while maintaining type safety.

Study this in the interactive course See the whole Scala roadmap

Free resources to learn Type parameters

Official docsPolymorphic Methods | Tour of Scala | Scala Documentation
Official docsGeneric Classes | Tour of Scala | Scala Documentation
ArticleBasics of Generics in Scala | Baeldung on Scala

Type parameters: common questions

Can I learn Type parameters 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 Type parameters 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 Type parameters tutorial for beginners?

It is lesson 23 of 165 in the free Scala roadmap, in stage 5, Conditionals. If you are new to Scala, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.