<dependencies>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.8</version>
</dependency>
</dependencies>
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
Gson gson = new Gson();
String jsonString = "{\"name\":\"John\",\"age\":30,\"city\":\"New York\"}";
JsonObject jsonObject = gson.fromJson(jsonString, JsonObject.class);
String name = jsonObject.get("name").getAsString();
int age = jsonObject.get("age").getAsInt();
String city = jsonObject.get("city").getAsString();
import java.io.FileReader;
FileReader reader = new FileReader("data.json");
JsonObject jsonObject = gson.fromJson(reader, JsonObject.class);
String name = jsonObject.get("name").getAsString();
int age = jsonObject.get("age").getAsInt();
String city = jsonObject.get("city").getAsString();
System.out.println("Name: " + name);
System.out.println("Age: " + age);
System.out.println("City: " + city);