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You wrote Kotlin code and compiled it with kotlinc, but running java MyProgram gives an error. What is the likely cause?

medium📝 Debug Q14 of 15
Kotlin - Basics and JVM Runtime
You wrote Kotlin code and compiled it with kotlinc, but running java MyProgram gives an error. What is the likely cause?
AYou forgot to specify the main class in the command
BKotlin code cannot be run on JVM
CYou used the wrong Kotlin compiler
DThe JVM does not support Kotlin bytecode
Step-by-Step Solution
Solution:

  1. Step 1: Understand running Kotlin bytecode on JVM

    After compiling, you must specify the main class name when running with java.

  2. Step 2: Identify common mistake

    Running java MyProgram without the correct class or classpath causes errors.

  3. Final Answer:

    You forgot to specify the main class in the command -> Option A

  4. Quick Check:

    Run java with main class specified [OK]
Quick Trick: Always specify main class when running with java command [OK]
Common Mistakes:
MISTAKES
  • Assuming Kotlin code can't run on JVM
  • Using wrong compiler command
  • Believing JVM lacks Kotlin support

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