ZCW-PhoneBook/PhoneBook.java

import java.util.Scanner;
import java.util.ArrayList;

/**
 * Created by leon on 1/23/18.
 */
public class PhoneBook {
    private String name;
    private String phoneNumber;
    
    public PhoneBook()
    {
        
    }
    
    public String add(String n, String number)
    {
        n = name;
        number = phoneNumber;
        
        return null;
    }
    
    public String lookUp(String n)
    {
        n = name;
        return null;
    }
}