Kotlin's type system distinguishes between nullable and non-nullable types to eliminate null pointer exceptions, which are referred to as a billion-dollar mistake; this Kotlin null safety explained tutorial covers the syntax for declaring nullable variables with a question mark and using the safe call operator and elvis operator to gracefully handle null values instead of throwing exceptions at runtime. By understanding these Kotlin null safety best practices like non-nullable vs nullable types and operators for avoiding null pointer exceptions in Kotlin, beginners can write code that handles potential null values at compile time rather than crashing at runtime by learning how to properly check for null when calling properties on a variable that could be null. This Kotlin null safety for beginners video will demonstrate these techniques for handling null values in Kotlin to take advantage of Kotlin's null safety features and avoid frustrating null pointer exceptions.
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