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Kotlin interview questions on null safety, coroutines, and Android development.
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Top Kotlin Interview Questions
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1
How does Kotlin handle null safety?
Hint: Nullable types, ?, !!
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2
What are coroutines?
Hint: Lightweight concurrency
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3
Explain data classes
Hint: Auto-generated equals, hashCode, copy
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4
What are sealed classes?
Hint: Restricted class hierarchies
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5
Difference between val and var
Hint: Immutable vs mutable
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6
What are extension functions?
Hint: Adding methods to existing classes
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