Short Answer 
To handle JSON issues, first, validate the JSON using online tools to correct any syntax errors. If you control the JSON source, ensure it complies with proper formats, while lenient mode can be enabled as a last resort for parsing malformed JSON with caution.
Step 1: Validate Your JSON
First, ensure that the JSON data you are working with is valid. Use online tools or JSON validators to identify any syntax errors or formatting issues. A correctly formatted JSON is essential to prevent errors during parsing. Here’s how you can validate:
- Copy the JSON string you intend to validate.
- Paste it into an online JSON validator tool.
- Review any error messages and correct the issues as necessary.
Step 2: Correct the JSON Source
If you have control over the JSON output, consider adjusting the source from which the JSON is generated. It’s important to ensure that the data produced is properly formatted and adheres to the standards set by RFC 4627. By rectifying the source, you prevent future errors. Here are actions you can take:
- Modify your server-side code to generate well-formed JSON.
- Consult documentation or guidelines for creating correct JSON structures.
Step 3: Enable Lenient Mode as a Last Resort
If you cannot change the JSON source and must parse the malformed JSON, you can set the JsonReader to lenient mode. This allows some errors to be accepted, but use this with caution as it may introduce further issues. Here’s how to do it:
- Initialize your JsonReader with the JSON string: JsonReader jsonReader = new JsonReader(new StringReader(jsonString));
- Set leniency: jsonReader.setLenient(true);
- Test your application to see if it successfully parses the JSON.