23 lessons

Kotlin Lessons

Learn Kotlin through a guided course covering setup, syntax, values, control flow, arrays, functions, OOP and real projects.

Code preview

kotlin

data class Course(val title: String)

val title = course?.title ?: "Untitled"

●Safe fallback title

23 lessons across 5 sections. Each example shows real, runnable code with its expected output.

Topics covered

Null safetyData classesCoroutinesAPI clients