Welcome to the community! Thanks for taking the time to format your code! It’s hard to say, looking at that, but what does “jsonStr” actually look like? From experience, I would say that it’s probably ...

The files in this package implement JSON encoders/decoders in Java. It also includes the capability to convert between JSON and XML, HTTP headers, Cookies, and CDL. This is a reference implementation.

JSON is a light-weight, language independent, data interchange format. See http://www.JSON.org/ The files in this package implement JSON encoders/decoders in Java. It ...

However, if instead the JSON content uses a JSON String to store the value, one needs to use the JsonString annotation. For example: ...