[Solved] What happens if a safe cast using as? fails in Kotlin? — Ans: It returns null instead of throwing an exception | Kotlin

Kotlin - Null Safety

What happens if a safe cast using as? fails in Kotlin?

AIt throws a ClassCastException

BIt converts the object to a string automatically

CIt returns the original object unchanged

DIt returns null instead of throwing an exception

Step-by-Step Solution

Solution:

Step 1: Understand safe cast behavior
The safe cast operator as? tries to cast an object to a type but returns null if the cast is not possible.
Step 2: Compare with unsafe cast
Unlike the unsafe cast as, which throws an exception on failure, as? safely returns null.
Final Answer:
It returns null instead of throwing an exception -> Option D
Quick Check:
Safe cast returns null on failure = B [OK]

Quick Trick: Safe cast returns null if it can't convert [OK]

Common Mistakes:

MISTAKES

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What happens if a safe cast using as? fails in Kotlin?