org.json.JSONException:没有名称JSON提取错误的值

import org.json.JSONException;
import org.json.JSONObject;

public class JsonExample {
    public static void main(String[] args) {
        String jsonString = "{\"name\": \"John\", \"age\": 30}";

        try {
            JSONObject jsonObject = new JSONObject(jsonString);
            
            if (jsonObject.has("name")) {
                String name = jsonObject.getString("name");
                System.out.println("Name: " + name);
            } else {
                System.out.println("Name not found in JSON object");
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
}