Null Safety

Null Safety

Null Safety is a core part of Kotlin. In this case file you'll learn what it is, why it matters, and how to use it in real code.

Understanding null safety well means you can read other people's Kotlin code with confidence, and avoid the most common beginner mistakes in this area.

Key points:

• What null safety means in the context of Kotlin
• A minimal example you can run or read in the playground on the right
• A common mistake to avoid when working with null safety

// Kotlin: Null Safety
fun main() {
  println("Exploring Null Safety")
}

Tip: Try changing a value in the code on the right and re-running it — small experiments are the fastest way to build real intuition for null safety.