*3.11 (Find the number of days in a month) Write a program that prompts the user
to enter the month and year and displays the number of days in the month. For
example, if the user entered month 2 and year 2012, the program should display
that February 2012 had 29 days. If the user entered month 3 and year 2015, the
program should display that March 2015 had 31 days.
import java.util.Scanner; public class ProgrammingEx3_11 { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("Enter month and year :"); int month = input.nextInt(); int year = input.nextInt(); int days = 31; String monthString; switch (month) { case 2: if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) { days = 29; break; } days = 28; break; case 4: case 6: case 9: case 11: days = 30; } switch (month) { case 1: monthString = "January"; break; case 2: monthString = "February"; break; case 3: monthString = "March"; break; case 4: monthString = "April"; break; case 5: monthString = "May"; break; case 6: monthString = "June"; break; case 7: monthString = "July"; break; case 8: monthString = "August"; break; case 9: monthString = "September"; break; case 10: monthString = "October"; break; case 11: monthString = "November"; break; case 12: monthString = "December"; break; default: monthString = "Invalid month"; days = 0; break; } System.out.println(monthString + " " + year + " had " + days + " days"); } }
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