/**
     This class may be used to issue personalized greetings
       (character strings consisting of a greeting followed
       by a comma followed by a person's name

     The greeting to be used is hard coded into the method,
       while the name to be used is obtained interactively  
       from the user.
     A different greeting is used on the first access to
       an object than on subsequent accesses.
 */


import java.util.Scanner;

public class PersonalizedGreeter
{
  
   // the name of the person to be greeted
   private String name;
   
   // the greeting to be used next
   private String nextGreeting;
   
   
   /**
        Constructs a PersonalizedGreeter for
          a user with a given name
        @param s the name
    */
   
   public PersonalizedGreeter()                           {
     Scanner sc = new Scanner(System.in);  
     System.out.print("What is your name? ");
     name = sc.next();                
     nextGreeting = "Welcome, ";          
     sc.close();                                          }
   
     
   /**
        Greets the user for this PersonalizedGreeter
          by printing a String to the console
        The greeting for second and subsequent invocations
          of this method on an object acknowledges
          that the object has been accessed before by 
          this method
    */  
   
   public void access()                                   {
     System.out.print(nextGreeting);
     System.out.print(name);
     System.out.println("!");                             
     nextGreeting = "Welcome back, ";                     }
   
     
   

}