记《learning hard C#学习笔记》 书中一个错误

    class Person
    {

        private string name;
        private static Person person;
        public string Name
        {
            get { return name; }
        }

        private Person()
        {
            Console.WriteLine("私有构造方法被调用");
            this.name = "learning hard";
        }

        public static Person getInstance()
        {
            if (person == null)
            {
                person = new Person();
            }
            return person;
        }

    }

    class Program
    {
        static void Main(string[] args)
        {
            Person person1 = Person.getInstance();
            Person person2 = Person.getInstance();

            Console.WriteLine("单例是否有效:{0}", person1 == person2);
            Console.WriteLine("类实例的name属性为:{0}",person1.Name);
            Console.Read();
        }
    }