(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 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 code in java.

import java.util.*;

// class definition

public class Main

{

public static void main(String[] args) {

    // scanner object to read input from user

    Scanner s=new Scanner(System.in);

    // array of months

  String mon[] ={

       null , "January" , "February" , "March" , "April", "May",

       "June", "July", "August", "September", "October",

       "November", "December"};

       // array which store number of days corresponding to months

       int days[]={0,31,28,31,30,31,30,31,31,30,31,30,31};

       // ask user to enter month

       System.out.print("enter the month:");

       // read month

      int m=s.nextInt();

      // ask user to enter year

       System.out.print("enter the year:");

       // read year

      int year=s.nextInt();

      // check the leap year

      if(m==2 &&(((year % 4 == 0) && (year % 100!= 0)) || (year%400 == 0)))

      {

          System.out.println(mon[m]+" "+year+" has 29 days.");

      }

      else

      System.out.println(mon[m]+" "+year+" has "+days[m]+" days");    

}

}

Explanation:

Declare and initial month array and days array.Then read the month and year From user with the scanner object.Check if entered year is a leap year or not.Then based on the year and month print the number of days .

Output:

enter the month:2                                                                                                                                            

enter the year:2000                                                                                                                                          

February 2000 has 29 days.

enter the month:3                                                                                                                                            

enter the year:2005                                                                                                                                          

March 2005 has 31 days.