All Tools VerseJSON to Java POJO
Generate Java POJO classes from a JSON sample, with field types inferred and nested objects as classes.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Processed locally in your browser. Your JSON never leaves this tab.
How to Use JSON to Java POJO
- Paste a JSON sample. A representative object works best.
- Generate classes. Java POJO classes are inferred from the values.
- Read the result. Nested objects become their own classes.
- Copy the result. Click Copy result. It all runs in your browser.
Frequently Asked Questions
What is a POJO?
A plain old Java object, a simple class with private fields that mirror your JSON keys and their inferred types.
How are types mapped?
Whole numbers become int, decimals become double, true or false becomes boolean, and text becomes String.
Are getters and setters included?
The output gives the fields. You can add accessors with your IDE or a library like Lombok.
Is my data sent anywhere?
No. The generation runs entirely in your browser, so your JSON never leaves the tab.
Is it free?
Yes. Every tool here is free to use with no sign up.
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