Why generate Java classes from my config?

Java classes with Jackson annotations let you deserialize config files directly using ObjectMapper. 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 Java class. The tool produces RootApp, RootDatabase, RootDatabaseCredentials, and RootFeatures classes, each with properly typed fields and Jackson annotations.

DevBento

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

Generate Java Classes from Config Object

Generate Java classes with Jackson annotations from a nested application configuration. Paste your config JSON and get production-ready typed Java 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 Java Classes from Config Object

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

What You Get

The tool produces:

Root Root class with three top-level sections: App, Database, Features
RootApp class with Name, Version, Debug fields
RootDatabase class with Host, Port, and Credentials nested class
RootDatabaseCredentials class for database auth
RootFeatures class with DarkMode, MaxConnections, and AllowedOrigins list
Proper Java type mappings: String, long, double, boolean, List<String>

How to Use

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

Real-World Pattern

Java config loading with Jackson works seamlessly with ObjectMapper.readValue. Generate classes from your default config, then deserialize them from JSON files in your classpath or from environment variables.

🔒

Nothing you paste leaves this tab. Every tool runs entirely in your browser — no upload, no server, no account.