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How can you safely call a Java method that might return null in Kotlin?

hard📝 Application Q9 of 15
Kotlin - Basics and JVM Runtime
How can you safely call a Java method that might return null in Kotlin?
AIgnore null and call methods directly.
BConvert Java method to Kotlin inline function.
CUse Kotlin's lateinit modifier.
DDeclare the variable as nullable type and use safe calls.
Step-by-Step Solution
Solution:

  1. Step 1: Understand interoperability with Java

    Java methods can return null; Kotlin requires nullable types to handle this safely.

  2. Step 2: Use safe calls to avoid exceptions

    Declaring variables nullable and using ?. operator prevents null pointer exceptions.

  3. Final Answer:

    Declare the variable as nullable type and use safe calls. -> Option D

  4. Quick Check:

    Safe Java interop = B [OK]
Quick Trick: Use nullable types and ?. for Java interop null safety [OK]
Common Mistakes:
MISTAKES
  • Ignoring nullability from Java
  • Misusing lateinit for null safety
  • Thinking Java methods convert automatically

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