Free online tool to convert Java object toString() output to standard JSON format. Supports Map style, JavaBean style, arrays, and more. One-click conversion with formatting and minification.
TL;DR: Convert Java object toString() output to standard JSON
This tool runs entirely in your browser. Open DevTools → Network panel and search your input — it appears in no request.
FAQ
Java's toString() method returns a string representation of an object, commonly in formats like {key=value} or ClassName(field=value). This format is not standard JSON and cannot be parsed directly by JSON parsers.
Supports Map style {key=value}, JavaBean style ClassName(f=v), arrays/lists [a, b, c], and standard JSON format. Nested structures and Chinese characters are also supported.
Yes, after conversion you can copy the result directly or click the download button to save the result as a .json file.
No, all conversions are done locally in the browser. Data is never uploaded to any server, protecting your data privacy.
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