Вывод в консоль: "The user's name is null, id = 0". В чём может быть ошибка?

public class Solution {
    public static void main(String[] args) throws Exception {
        System.out.println(Matrix.NEO);
    }

    static class Matrix {
        public static DBObject NEO = new User().initializeIdAndName(1, "Neo");
    }

    interface DBObject {
        DBObject initializeIdAndName(long id, String name);
    }

    static class User implements DBObject {
        long id;
        String name;

        @Override
        public String toString() {
            return String.format("The user's name is %s, id = %d", name, id);
        }

        @Override
        public DBObject initializeIdAndName(long id, String name) {
            return this;
        }
    }
}

C:\Users\admin\.jdks\openjdk-15.0.1\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.2.3\lib\idea_rt.jar=56377:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.2.3\bin" -Dfile.encoding=UTF-8 -classpath D:\IDEA_project\JavaRushTasks\out\production\2.JavaCore com.javarush.task.task13.task1320.Solution
The user's name is null, id = 0

Process finished with exit code 0