Walkthrough - Kotlin: Strings

In this lesson, we explored the String type in Kotlin, including its immutable nature, literal variations, powerful templating system, and common operations.

Changes Made

Implementation

Created Strings.kt which implements:
- String Basics: Indexing and iteration with for loops.
- Concatenation: Comparing + with the fluent buildString builder.
- Literals: Demonstrating "escaped" strings (standard) vs "raw" strings (triple quotes).
- Indentation Management: Using trimMargin() to format multiline strings cleanly.
- String Templates: Using $variable and ${expression} for clean embedding.
- Operations: trim(), uppercase(), replace(), and JVM-style String.format().
- Equality: Comparing structural equality (==) vs referential equality (===).
Updated App.java to execute the String demonstration.

Verification

Build: Successfully executed ./gradlew :app:assemble.
Logic: Verified that structural equality (==) works as expected for content comparison, while referential equality (===) correctly identifies when two references point to different objects even if the content is the same.

See the Step-by-Step Explanation for technical details.

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