[Solved] Consider this Kotlin code calling a Java method returning a platform type:val length = javaObject.getName().lengthWhat happens if getName() returns null at runtime? | Kotlin

Kotlin - Null Safety

Consider this Kotlin code calling a Java method returning a platform type:

val length = javaObject.getName().length

What happens if getName() returns null at runtime?

AThe code throws a NullPointerException at runtime

BThe code fails to compile due to null safety

CThe code compiles and runs safely, length is 0

DThe code returns length as -1

Step-by-Step Solution

Solution:

Step 1: Understand platform type nullability
Platform types can be null but Kotlin treats them as non-nullable unless specified.
Step 2: Analyze code behavior
Calling length on a null value causes a NullPointerException at runtime.
Final Answer:
The code throws a NullPointerException at runtime -> Option A
Quick Check:
Platform types can cause runtime NPE if null used unsafely [OK]

Quick Trick: Accessing platform type without null check risks NPE [OK]

Common Mistakes:

MISTAKES

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