Convert Json to Typed ArrayList using Gson in Java

├Źndice
  1. Introduction
  2. Converting JSON to Typed ArrayList using Gson
    1. Step 1: Create a Java class that matches the JSON structure
    2. Step 2: Use Gson to convert JSON to a typed ArrayList

Introduction

When working with JSON data in Java, it is often necessary to convert the JSON data into a Java object. One popular library for converting JSON to Java objects is Gson. Gson is a powerful library for working with JSON in Java and can handle complex JSON data structures.

Converting JSON to Typed ArrayList using Gson

To convert JSON to a typed ArrayList using Gson, you can follow the following steps:

Step 1: Create a Java class that matches the JSON structure

In order to convert JSON to a typed ArrayList using Gson, you need to create a Java class that matches the JSON structure. The Java class should have instance variables that match the keys in the JSON object.

For example, consider the following JSON data:


[
{
"name": "John",
"age": 30
},
{
"name": "Mary",
"age": 25
}
]

To convert this JSON data to a typed ArrayList using Gson, you would need to create a Java class that looks like this:


public class Person {
private String name;
private int age;

// getters and setters
}

Step 2: Use Gson to convert JSON to a typed ArrayList

Once you have created the Java class that matches the JSON structure, you can use Gson to convert the JSON data to a typed ArrayList. Here is an example code snippet that shows how to do this:


String json = "[{"name"":""John""

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