(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

/*
(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 Exercise_04_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 Y for Yes and N for No: ");
		String s = input.nextLine();
		char answer = s.charAt(0);

		if (Character.toUpperCase(answer) == 'Y')
			day += 1;

		// Prompt the user to answer questions
		System.out.print("Is your birthday in Set2?\n");
		System.out.print(set2);
		System.out.print("\nEnter Y for Yes and N for No: ");
		s = input.nextLine();
		answer = s.charAt(0);

		if (Character.toUpperCase(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 Y for Yes and N for No: ");
		s = input.nextLine();
		answer = s.charAt(0);

		if (Character.toUpperCase(answer) == 'Y')
			day += 4;

		// Prompt the user to answer questions
		System.out.print("Is your birthday in Set4?\n");
		System.out.print(set4);
		System.out.print("\nEnter Y for Yes and N for No: ");
		s = input.nextLine();
		answer = s.charAt(0);

		if (Character.toUpperCase(answer) == 'Y')
			day += 8;

		// Prompt the user to answer questions
		System.out.print("Is your birthday in Set5?\n");
		System.out.print(set5);
		System.out.print("\nEnter Y for Yes and N for No: ");
		s = input.nextLine();
		answer = s.charAt(0);

		if (Character.toUpperCase(answer) == 'Y')
			day += 16;

		System.out.println("\nYour birthday is " + day + "!");
	}
}