Chapter 4 Exercise 10, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

4.10 (Guess birthday) Rewrite Listing 4.3, GuessBirthday.java, to prompt the user to enter the character Y for Yes and N for No rather than entering 1 for Yes and 0 for No.

import java.util.Scanner;
 
public class ProgrammingEx4_10 {
 
 public static void main(String[] args) {
  String set1 = " 1  3  5  7\n" + " 9 11 13 15\n" + "17 19 21 23\n"
    + "25 27 29 31";
 
  String set2 = " 2  3  6  7\n" + "10 11 14 15\n" + "18 19 22 23\n"
    + "26 27 30 31";
 
  String set3 = " 4  5  6  7\n" + "12 13 14 15\n" + "20 21 22 23\n"
    + "28 29 30 31";
 
  String set4 = " 8  9 10 11\n" + "12 13 14 15\n" + "24 25 26 27\n"
    + "28 29 30 31";
 
  String set5 = "16 17 18 19\n" + "20 21 22 23\n" + "24 25 26 27\n"
    + "28 29 30 31";
 
  int day = 0;
 
  // Create a Scanner
  Scanner input = new Scanner(System.in);
 
  // Prompt the user to answer questions
  System.out.print("Is your birthday in Set1?\n");
  System.out.print(set1);
  System.out.print("\nEnter N for No and Y for Yes: ");
  String s = input.nextLine();
  char answer = s.charAt(0);
 
  if (answer == 'Y')
   day += 1;
 
  // Prompt the user to answer questions
  System.out.print("\nIs your birthday in Set2?\n");
  System.out.print(set2);
  System.out.print("\nEnter N for No and Y for Yes: ");
  s = input.nextLine();
  answer = s.charAt(0);
 
  if (answer == 'Y')
   day += 2;
 
  // Prompt the user to answer questions
  System.out.print("Is your birthday in Set3?\n");
  System.out.print(set3);
  System.out.print("\nEnter N for No and Y for Yes: ");
  s = input.nextLine();
  answer = s.charAt(0);
 
  if (answer == 'Y')
   day += 4;
 
  // Prompt the user to answer questions
  System.out.print("\nIs your birthday in Set4?\n");
  System.out.print(set4);
  System.out.print("\nEnter N for No and Y for Yes: ");
  s = input.nextLine();
  answer = s.charAt(0);
 
  if (answer == 'Y')
   day += 8;
 
  // Prompt the user to answer questions
  System.out.print("\nIs your birthday in Set5?\n");
  System.out.print(set5);
  System.out.print("\nEnter N for No and Y for Yes: ");
  s = input.nextLine();
  answer = s.charAt(0);
 
  if (answer == 'Y')
   day += 16;
 
  System.out.println("\nYour birthday is " + day + "!");
 }
 
}