KT

Kotlin

A modern JVM language by JetBrains — concise, safe, and fully interoperable with Java.

Variables & Null Safety

3 quick checks · 3 quiz questions

Functions & Extensions

3 quick checks · 2 quiz questions

Classes & Data Classes

2 quick checks · 2 quiz questions

Collections & Lambdas

3 quick checks · 2 quiz questions

Running Code & Tools

3 quick checks · 2 quiz questions