如何添加从用户输入中创建的值并将其传输到LinkedList？

Question

Below is the following code I have created. My question is how can I create a method that returns a value created from user input and then place that value at the end of my LinkedList? For example the computer will prompt me to enter the char 'a' to add another client. How can I create a method that stores that added client information in the LinkedList?

 import java.io.*;
 import java.util.*;

    public class Clients implements Serializable
    {   
        private LinkedList<Person> clients = new LinkedList<Person>();
        private int id = 1;

        private static Scanner in = new Scanner(System.in);

        public static String nextLine()
        {   
            return in.nextLine(); 
        }

        public static char nextChar()
        {   
            return in.nextLine().charAt(0); 
        }

        public Clients()
        {   
            clients.add(new Person("Homer", id++));
            clients.add(new Person("Marge", id++));   
        }

        public void addClients()
        {
            //??????????
            //????????????
        }
}

Answer 1

假设我没有丢失任何东西，也没有验证输入，我想那应该是这样的：

clients.add(new Person(nextLine(), id++);