23 questions for “JSON Serialization & Deserialization”

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Flutter JSON Serialization & Deserialization 7

Information Technology

23 questions in 2 technologies

#	Question	Technology	Topic	Level
1	What is JSON serialization and deserialization, and how do Dart's own built in jsonEncode and jsonDecode functions let you convert genuinely freely between a Dart object and its own corresponding JSON text representation? Flutter › JSON Serialization & Deserialization	Flutter	JSON Serialization & Deserialization	Beginner
2	How should you properly handle a genuinely nullable or optional field within your JSON deserialization logic, ensuring your app genuinely does not crash if a specific expected field happens to actually be missing from a given received response? Flutter › JSON Serialization & Deserialization	Flutter	JSON Serialization & Deserialization	Intermediate
3	How do you properly convert a decoded JSON Map into a genuinely strongly typed custom Dart model class, rather than continuing to work directly with a considerably less safe raw dynamic Map throughout your entire app? Flutter › JSON Serialization & Deserialization	Flutter	JSON Serialization & Deserialization	Beginner
4	How does the json_serializable package let you automatically generate the required fromJson and toJson methods for your own Dart model classes, avoiding needing to write that particular repetitive boilerplate code entirely completely by hand yourself? Flutter › JSON Serialization & Deserialization	Flutter	JSON Serialization & Deserialization	Intermediate
5	How do you properly handle deserializing a genuinely nested JSON structure, such as an order object that itself contains an embedded nested list of individual line item objects, into a properly correctly structured set of nested Dart model classes? Flutter › JSON Serialization & Deserialization	Flutter	JSON Serialization & Deserialization	Intermediate
6	How can you properly implement genuinely custom JSON converters specifically for a given specific type that json_serializable does not already directly know exactly how to properly handle by default, such as converting a DateTime value to and from a specific particular custom string format? Flutter › JSON Serialization & Deserialization	Flutter	JSON Serialization & Deserialization	Advanced
7	What are the practical performance considerations of parsing a genuinely very large JSON response, and how does moving that particular parsing work onto a genuinely separate isolate help meaningfully avoid causing your app's own visible interface to freeze? Flutter › JSON Serialization & Deserialization	Flutter	JSON Serialization & Deserialization	Advanced
8	How do you properly parse and correctly handle several genuinely different types of incoming JSON messages received over a single shared WebSocket connection, such as distinguishing between a genuinely new chat message and a separate typing indicator event? Flutter › WebSockets & Real Time Data in Flutter	Flutter	WebSockets & Real Time Data in Flutter	Intermediate
9	How would you send a POST request with a JSON request body using HttpClient, and correctly parse a JSON response using a library like Jackson? Java › Java Networking & HTTP Client	Java	Java Networking & HTTP Client	Intermediate
10	How would you correctly serialize and deserialize java.time types (like LocalDateTime or ZonedDateTime) to/from JSON using a library like Jackson, and what common configuration pitfalls arise? Java › Java Date & Time API (java.time)	Java	Java Date & Time API (java.time)	Advanced

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