What will be the output of this Kotlin code?

medium📝 Predict Output Q4 of 15

Kotlin - Null Safety

fun main() {
    val message: String = "Hello"
    println(message.length)
}

Bnull

CCompilation error

Step-by-Step Solution

Solution:

Step 1: Analyze variable declaration
message is a non-nullable String initialized with "Hello".
Step 2: Calculate length of the string
"Hello" has 5 characters, so message.length is 5.
Final Answer:
5 -> Option A
Quick Check:
Non-nullable String length = 5 [OK]

Quick Trick: Non-nullable String holds value, length is count of chars [OK]

Common Mistakes:

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