Write a program that prompts the user to enter the month and year and displays t

Question

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 2000, the program should display that February 2000 has 29 days. If the user entered month 3 and year 2005, the program should display that March 2005 has 31 days.

Here is a sample run of this program:

Enter a month in the year (e.g., 1 for Jan): 1
Enter a year: 2009
January 2009 has 31 days

Exercise 3.11
Liang, Y. Daniel. Introduction to Java Programming (8th Edition)

Explanation / Answer

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import java.util.*;
public class daysinmonth
{
public static void main(String[] args)
{Scanner in = new Scanner(System.in);
int month,year,days=0;
String name;
System.out.print("Enter year: ");
year=in.nextInt();
System.out.print("Enter month(1 = January, 12 = December): ");
month=in.nextInt();
if(month<1||month>12)
     System.out.println("InValid date");
else
    {if(month==1)
          {days=31;
            name="January";
            }
    else if(month==2)
           {days=28;
            name="February";
            if(year%4==0)
              if(year%100==0)
                {if(year%400==0)
                     days++;
                    }        
                else
                 days++;
            }
     else if(month==3)
           {days=31;
            name="March";
            }
     else if(month==4)
           {days=30;
            name="April";
            }
     else if(month==5)
           {days=31;
            name="May";
            }
        else if(month==6)
           {days=30;
            name="June";
            }
      else if(month==7)
           {days=31;
            name="July";
            }

      else if(month==8)
           {days=31;
            name="August";
            }
      else if(month==9)
           {days=30;
           name="September";
            }
        else if(month==10)
           {days=31;
            name="October";
            }
       else if(month==11)
           {days=30;
            name="November";
                }
       else if(month==12)
           {days=31;
            name="December";
            }
       
        }
    System.out.println(name +" "+year+" has "+days+" days");
    }
}

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