Walkthrough - Kotlin Integration

I have successfully integrated Kotlin into your Java project and demonstrated how to call Kotlin functions from Java.

Changes Made

Configuration

Added Kotlin JVM plugin and standard library to the version catalog and build script.
Synchronized the project to enable Kotlin support in the IDE.

Implementation

Created Hello.kt containing:
- sum(a: Int, b: Int): Returns the sum of two integers.
- printSum(a: Int, b: Int): Prints a formatted sum string.
- getGreeting(): Returns a greeting string.
Modified App.java to call these functions using the HelloKt class.

Verification

Build: Successfully executed ./gradlew :app:assemble.
Code Analysis: Verified that App.java no longer has unresolved reference errors.

For a detailed breakdown of each step, see the Step-by-Step Explanation.

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