[Solved] This Kotlin code calls a Java method returning a platform type:val text: String = javaApi.getText() println(text.length)It sometimes crashes with NullPointerException. How to fix it? | Kotlin

Kotlin - Null Safety

This Kotlin code calls a Java method returning a platform type:

val text: String = javaApi.getText()
println(text.length)

It sometimes crashes with NullPointerException. How to fix it?

AChange text type to String? and check for null

BAdd !! after getText() call

CUse lateinit var instead of val

DNo fix needed, it's a Kotlin bug

Step-by-Step Solution

Solution:

Step 1: Identify cause of NullPointerException
Assigning platform type to non-nullable String causes crash if Java returns null.
Step 2: Fix by using nullable type and null check
Changing to String? allows safe null handling and prevents crash.
Final Answer:
Change text type to String? and check for null -> Option A
Quick Check:
Nullable type prevents platform type null crashes [OK]

Quick Trick: Use nullable types to avoid platform type null crashes [OK]

Common Mistakes:

MISTAKES

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