Answer:
Following are the program in JAVA language
import java.util.Scanner; // import package
import java.util.Calendar; // import package
public class Main // class main
{
public static void main(String[] args) // main function
{
Scanner input = new Scanner(System.in); // for user input
Calendar calendar = Calendar.getInstance(); //get calendar instance for methods
int nYear , nMonth , date =1 , nDays;
String MonthOfName = "";
System.out.print(" Enter a month in the year :");
nMonth = input.nextInt(); //input Month
System.out.print("Enter a year :");
nYear = input.nextInt(); //Input Year
switch (nMonth) //Find month name via 1-12
{
case 1:
MonthOfName = "January";
nMonth = Calendar.JANUARY;
break;
case 2:
MonthOfName = "February";
nMonth = Calendar.FEBRUARY;
break;
case 3:
MonthOfName = "March";
nMonth = Calendar.MARCH;
break;
case 4:
MonthOfName = "April";
nMonth = Calendar.APRIL;
break;
case 5:
MonthOfName = "May";
nMonth = Calendar.MAY;
break;
case 6:
MonthOfName = "June";
nMonth = Calendar.JUNE;
break;
case 7:
MonthOfName = "July";
nMonth = Calendar.JULY;
break;
case 8:
MonthOfName = "August";
nMonth = Calendar.AUGUST;
break;
case 9:
MonthOfName = "September";
nMonth = Calendar.SEPTEMBER;
break;
case 10:
MonthOfName = "October";
nMonth = Calendar.OCTOBER;
break;
case 11:
MonthOfName = "November";
nMonth = Calendar.NOVEMBER;
break;
case 12:
MonthOfName = "December";
nMonth =Calendar. DECEMBER;
}
calendar.set(nYear, nMonth, date); // set date to calender to get days in month
nDays=calendar.getActualMaximum(Calendar.DAY_OF_MONTH); // get no of days in month
System.out.println(MonthOfName + " " + nYear + " has " + nDays + " days."); //print output
}
}
Output:
Enter a month in the year : : 09
Enter a year : 2019
September 2019 has 30 days.
Explanation:
In this program we have take two user input one for the month and other for the year Also take two variables which are used for storing the month name and no of days in a month. with the help of switch we match the cases and store the month value .After that set the date to calender with help of calendar.set(nYear, nMonth, date) method and To get the number of days from a month we use calendar.getActualMaximum(Calendar.DAY_OF_MONTH); method and finally print year and days.
