ZCW-AliceAndBob-BlueJ/Main.java

// JN - 2018
import java.util.Scanner;
public class Main {
    public static void main() {
       int i = 5;
       start("Enter a name, " + i + " attempts.", i); 
    }   

    public static void start(String greeting, int i){
       System.out.println(greeting);
       Scanner kb = new Scanner(System.in);
       String userInput = kb.nextLine();
       kb.close();
       aliceOrBob(userInput, i);   
    }
    
    public static void aliceOrBob(String name, int i) {
       String message = name.equals("Alice") || name.equals("Bob") ?
                        "Hello " + name
                        :
                        "err";
       if (i == 1) { 
           System.out.println("Out of attempts");
           return;
        }  
       if (message.equals("err")) {
           i--;
           start("Try a new name, " + i + " attempts remain.", i);
        } else {
           System.out.println(message);
           Person valid = new Person(name);
           return;
        }
    }
}