Why does GSON for all fields of an object get values, but for the sid field is always null?

Question

Java

Why does GSON for all fields of an object get values, but for the sid field is always null?

public class Info implements Serializable {
 private int id;
 private String company_name; 
 private String company_url; 
 private String contact_city;
 private int scope;
 private String sid;
}

info: {
 id: "8",
 company_name: "Вкусные подарки",
 company_url: "google.ru",
 contact_city: "",
 scope: 0,
 sid: "hfgjixbl"
}

Answer 1

Judging by your example, sid gets the value "hfgjixbl", where did you see null? Write your complete code