Why generate Kotlin data classes from my config?

Kotlin data classes with kotlinx.serialization let you deserialize config files directly using Json.decodeFromString. This gives you type safety for your entire configuration and catches errors at compile time.

How does the tool handle nested config sections?

Each nested object becomes a separate Kotlin data class. The tool produces RootApp, RootDatabase, RootDatabaseCredentials, and RootFeatures classes, each with properly typed properties and serialization annotations.

DevBento

Tools/JSON to TypeScript & 8+ Languages Generator/Generate Kotlin Data Classes from Config Object

Generate Kotlin Data Classes from Config Object

Generate Kotlin data classes with kotlinx.serialization annotations from a nested application configuration object. Paste JSON, get typed Kotlin classes.

Output

Root name

Import path

JSON Input

TypeScript Output

// Generated by DevBento — json-to-typescript
interface RootApp {
  name: string;
  version: string;
  debug: boolean;
}

interface RootDatabaseCredentials {
  user: string;
  password: string;
}

interface RootDatabase {
  host: string;
  port: number;
  credentials: RootDatabaseCredentials;
}

interface RootFeatures {
  darkMode: boolean;
  maxConnections: number;
  allowedOrigins: string[];
}

interface Root {
  app: RootApp;
  database: RootDatabase;
  features: RootFeatures;
}

Send to:

Paste JSON to pretty-print, minify, validate, or visualize as an interactive graph. Syntax highlighting, tree view, and graph view with export.

ymlJSON / YAML / TOML / CSV / XML / HTML / Markdown

Convert between JSON, YAML, TOML, CSV, XML, HTML, Markdown, and .env in your browser. Paste config or API data and get the equivalent format instantly.

Generate Kotlin Data Classes from Config Object

Application configs have deep nesting: app settings, database credentials, feature flags. This example generates Kotlin data classes from a multi-level config structure so you can deserialize configuration files directly in your Kotlin application.

What You Get

The tool produces:

Root Root data class with three top-level sections: App, Database, Features
RootApp data class with Name, Version, Debug properties
RootDatabase data class with Host, Port, and Credentials nested class
RootDatabaseCredentials data class for database auth
RootFeatures data class with DarkMode, MaxConnections, and AllowedOrigins list
Proper Kotlin type mappings: String, Long, Double, Boolean, List<String>

How to Use

The example loads with a sample application config in Kotlin mode
The nested structure shows how each config section gets its own data class
Copy the classes and paste them into your Kotlin project
Replace with your actual config JSON to generate classes for your project

Real-World Pattern

Kotlin config loading with kotlinx.serialization works seamlessly with Json.decodeFromString. Generate data classes from your default config, then decode them from JSON files in your resources or from environment variables.

🔒

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