In GSON, we can use the transient keyword, ExclusionStrategy, and @Expose to exclude fields during the JSON serialization or deserialization process. Table of contents: 1. Setup Google Gson 2. Using the "transient" Keyword 3. Using the "ExclusionStrategy" 4. Using the "ExclusionStrategy" and custom annotation 5. Using the @Expose annotation 6. Download Source Code 7. References […]
Gson does not directly support Java 8’s date-time APIs like LocalDate, LocalDateTime, and ZonedDateTime. However, we can create a custom JSON serializer to support Java 8 date-time types. This article shows how to use Gson to handle the LocalDate type. Table of contents: 1. Setup Google Gson 2. Default, Gson does not support Java 8 […]
When the JSON field name doesn’t exactly match the Java object field names, we can use @SerializedName to change the JSON’s matching field name in Gson. Table of contents: 1. Setup Google Gson 2. JSON Unrecognized Field 3. Custom field name with @SerializedName 4. Download Source Code 5. References P.S Tested with Gson 2.10.1 1. […]
This article shows how to use Gson to write a Java object to a JSON file and read that JSON file back into a Java object. Table of contents: 1. Download Google Gson 2. A Java Object 3. Write Java object to JSON file using Gson 4. Read JSON from a file using Gson 5. […]
This article shows how to parse JSON Array using Gson. Table of contents: 1. Download Google Gson 2. Parse JSON Array using Gson 3. Parse JSON Array of Object Array using Gson 4. JSON array contains array of object 5. Unusual JSON array contains array of string 6. Download Source Code 7. References P.S Tested […]
This article shows how to parse JSON using Gson. Table of contents: 1. Download Google Gson 2. A Java Object 3. Parse JSON String using Gson 4. Parse JSON Array using Gson 5. Convert Java Object to JSON using Gson 6. Unstructured JSON 7. Download Source Code 8. References P.S Tested with Gson 2.10.1 1. […]
Java JSON Tutorials with full example, including how to read, write JSON with Jackson, Gson and JSON.simple frameworks.
Streaming APIs are efficient ways of processing large JSON files or data without loading the entire document into memory. Gson provides JsonReader and JsonWriter classes for JSON streaming. Gson’s Streaming API JsonWriter – Write JSON as a stream. JsonReader – Read JSON as a stream. Table of contents: 1. Setup Google Gson 1. Write JSON […]
This article shows how to pretty print JSON using Gson. Table of contents: 1. Setup Google Gson 2. Default Compact Print JSON 3. Pretty Print JSON using Gson 4. Download Source Code 5. References P.S Tested with Gson 2.10.1 1. Setup Google Gson Declare gson in the pom.xml. pom.xml <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.10.1</version> </dependency> 2. […]
This article shows how to convert Java objects to from JSON using Gson. Table of contents: 1. Download Google Gson 2. Gson Basic Usages 3. Java Object 4. Convert Object to JSON using Gson 5. Converts JSON to Java Object using Gson 6. Modify JSON with JsonElement 7. Converts Json Array to List objects 8. […]
