YAML Input

Java Output

What is YAML to Java Converter?

This tool converts YAML data structures into Java POJO (Plain Old Java Object) classes. The converter generates a Java class with private fields inferred from the YAML keys, along with getter and setter methods following Java naming conventions.

YAML keys are converted to camelCase field names. YAML string values produce String fields, numbers produce int or double, booleans produce boolean, lists produce List<Object>, and nested mappings produce nested class references. The output follows standard Java code conventions.

This converter generates Java classes with private fields. YAML lists become List<Object>, nested mappings become inner classes, and scalar types map to String, int, double, and boolean.

How to Convert YAML to Java

Follow these steps to generate a Java POJO class from your YAML data.

Paste or Upload Your YAML

Paste your YAML into the left panel, or click Upload to load a .yaml file. Click Sample for an example. Example YAML:

user:
  id: 1001
  name: Alice
  email: [email protected]
  active: true
  roles:
    - admin
    - editor

Click Convert

Click the Convert button. The right panel shows a Java class with private fields, a no-arg constructor, and getter/setter methods for each field.

Copy or Download the Java Code

Click Copy to copy the Java code to clipboard, or Download to save as a .java file. Rename the class as needed and add it to your project.

When You'd Use This Tool

API Model Generation

Generate Java model classes from YAML API schemas for use with Jackson or Gson in REST API implementations.

Spring Boot Config

Convert Spring Boot application.yml configuration to Java @ConfigurationProperties classes for type-safe config binding.

Data Binding

Generate Java POJOs from YAML data files for use with SnakeYAML or Jackson YAML data binding.

Microservices

Convert YAML service contract definitions to Java model classes for microservice communication contracts.

Frequently Asked Questions

What Java types are inferred from YAML values?

String → String, integer → int, float → double, boolean → boolean, list → List<Object>, null → Object.

Are nested YAML objects converted to separate classes?

The tool generates a single flat class with all fields. For deeply nested structures, consider using Jackson annotations or separate inner classes in production code.

Is the generated code production-ready?

The generated code provides a starting point. You may need to add annotations like @JsonProperty, adjust types, or add validation for production use.

Is my YAML data sent to a server?

No. All conversion happens in your browser. Your YAML never leaves your device.

Can I use this with Spring Boot's @ConfigurationProperties?

Yes. The generated getters/setters follow the convention expected by Spring's property binding. Add @ConfigurationProperties and @Component annotations to use it directly.

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