@SerializedName annoation: GSON: How to use a different name for serialised fields

 you can use GSON annotation @SerializedName annotation for using a different names for serialized fields.

Maven Dependency Needed:

<dependency>
    <groupId>com.google.code.gson</groupId>
    <artifactId>gson</artifactId>
    <version>2.8.6</version>
</dependency>

For Example:

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.annotations.SerializedName;

public class GsonExposeAnnotationTest {
    public static void main(String[] args) {

        Student student = new Student("Dinesh", "ROLL123", "Hyderabad - 500081");
        Gson gson = new GsonBuilder().setPrettyPrinting().create();
        System.out.println(gson.toJson(student));

       }
}

class Student {
    @SerializedName("student-name")
    String name;
    @SerializedName("student-rollno")
    String rollNo;
    @SerializedName("student-address")
    String address;

    public Student(String name, String rollNo, String address) {
        this.name = name;
        this.rollNo = rollNo;
        this.address = address;
    }
}

Output: Serialised output - fields name are different than in POJO

{
  "student-name": "Dinesh",
  "student-rollno": "ROLL123",
  "student-address": "Hyderabad - 500081"
}