[Solved] How can you safely iterate over a Java List platform type that might be null in Kotlin? — Ans: javaList?.forEach { println(it) } ?: println("Empty list") | Kotlin

Kotlin - Null Safety

How can you safely iterate over a Java List platform type that might be null in Kotlin?

AjavaList!!.forEach { println(it) }

BjavaList.forEach { println(it) }

CjavaList?.forEach { println(it) } ?: println("Empty list")

Dfor (item in javaList) println(item)

Step-by-Step Solution

Solution:

Step 1: Recognize javaList may be null
Platform types from Java can be null, so safe call is needed.
Step 2: Use safe call with fallback
Using ?.forEach runs loop if not null; ?: prints fallback message if null.
Final Answer:
javaList?.forEach { println(it) } ?: println("Empty list") -> Option C
Quick Check:
Safe call with fallback handles nullable platform collections [OK]

Quick Trick: Use ?. and ?: to safely handle nullable Java collections [OK]

Common Mistakes:

MISTAKES

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How can you safely iterate over a Java List platform type that might be null in Kotlin?