Generate Apex classes and tests in seconds. Paste your JSON below!
When building integrations in Salesforce, developers must deserialize JSON payloads returned from web callouts. Using statically typed wrapper classes is the recommended best practice. This approach provides compile-time safety, autocomplete support, and self-documenting code contracts.
With json2apex.com, you can automate this boilerplate generation. Simply paste your JSON, specify the class name, and the tool builds the complete parser class alongside a corresponding unit test class with assertions to verify correct serialization/deserialization.
Apex has reserved keywords (such as class, public, private, or limit) which cannot be used as variable names. If your payload uses these keys, json2apex automatically sanitizes the Apex properties by prefixing them with an underscore (e.g. _class) to prevent compiler failures.
One of the most common issues during deployment is the "JSON_PARSER_ERROR: Expected Array, Got Object". This happens when the API schema dynamically changes. Statically declared decimal values and list wrappers prevent mismatch exceptions. Always verify your mappings in sandbox environments first.