Java Gson Tutorial

In this Java Gson tutorial we learn how to use the Gson library.

Serializes Java Object to JSON String

• How to convert Java object to JSON String

• How to generate Pretty Print JSON String

• Gson.toJson() code examples

Deserializes JSON String to Java Object

• How to convert JSON String to Java object

• How to convert JSON String to JsonElement object

• How to use TypeToken class

• Gson.fromJson() code examples

Read JSON Files

• How to convert JSON file to Java object

• How to read JSON File using JsonReader class

• How to convert classpath resource JSON File to Java Object

Write JSON Files

• How to convert Java Object to JSON File

• How to write JSON file using JsonWriter class

• Spring Boot Web Application Export and Download JSON File

Exclude Fields

• How to exclude fields using ExclusionStrategy interface

• How to exclude fields using @Expose annotation

• How to exclude fields with modifiers

Custom Field Name

• How to custom field name using @SerializedName annotation

Versioning Support

• Versioning support using @Since annotation

Null Field Support

• How to enable serialize null fields

Others

• Top 5 Libraries for Serialization and Deserialization JSON

Happy Coding 😊