Question

CK CUNYOMP 167 al 2019/chapter/ X M X C Does Musical WePACCOU XG Persol chapter/4/section/23 Inbox (2,146) - ngomez Olongw 4.23 Homework 4-3 Write a Java program that asks the user for a gate entered as 4 integers dayNumber monthNumber date year. Where dayNumber An integer from 1-7 where 1 Sunday, 2 - Monday.... 7 Saturday monthNumber An integer from 1-12, where 1 - January, 2 - February, 12 - December date An integer from 1-31 representing the date. year An integer representing the year Your prompt to the user should be Enter 4 Integers representing dayunber monthumber date year: You program wit compute the proper dayName from the specified dayNumber and the proper mantrame from the specified monthNumber. Yout program wil print out the specified date in the following format: dayber monthNumber date year is d one month one date, year Please note your program will have to error check the input as follows Please note your program will have to error check the input as follows 1 First the dayNumber is checked for being in the range 1.7. if that is not the case your program should print out the following message and terminate execution Invalid day number: dovubec, please enter a number from 1..7. 2 Then the monthNumber is checked for being in the range 1.12. if that is not the case your program should print out the followica message and terminale execution Invalid month number monthumber, please enter a number from 1..12 Then the date is checked for being in the range 1..31 if that is not the case your program should print out the following messe terminate execution Invalid date number: date, please enter a number from 1..31. Then the cate must be checked for vidty. For example, there is no February 30. February 31. April 31. 31. September 31 November 31. the date is your program should print out the following message and terminate recution Invalid dater month . does not have date days, please enter a valid date as if the monthNumber - 2. and date - 29 you must verify that the year entered is a leap yes, which is the only time Das Wicidis P o les and the user entered a date - 20 should print out the following m o ge and terminate execution T dater year is not a leap year, February does not have date days, please enter a valid date

Answer 1

import java.util.*;
public class Main
{
static boolean leap(int year)//function to find leap year
{
boolean leap1=false;//intialize to false first
if(year % 4 == 0)
{
if( year % 100 == 0)
{
// year is divisible by 400, hence the year is a leap year
if ( year % 400 == 0)
leap1 = true;
else//in else case it is false
leap1 = false;
}
else
leap1=true;
}
else
leap1=false;
return leap1;//return the status of leap year in boolean format
}
   public static void main(String[] args) {
       int dayNumber,monthNumber,date,year;
       int monthDays[]={31,28,31,30,31,30,31,31,30,31,30,31};//no.of days of each months
       String[] days=new String[] {"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};//it is initialized for finding from 1 to 7 values
       //we can directly access their names using array index of day or month to find their name
       String[] month=new String[] {"January","February","March","April","May","June","July","August","September","November","December"};//months for numbers 1 to 12
       Scanner s=new Scanner(System.in);
       System.out.println("ener 4 integers representing dayNumber monthNumber date year");
       dayNumber=s.nextInt();//read the four values
       monthNumber=s.nextInt();
       date=s.nextInt();
       year=s.nextInt();
       if(dayNumber>=1&&dayNumber<=7)//it first checks for dayNumber 1 to 7 if true goes in else prints invalid day
       {
       if(monthNumber>=1&&monthNumber<=12)//chjecks for valid month
       {
       if(monthNumber!=2&&monthDays[monthNumber-1]>=date)//checks for other than february and if date matches with array monthDays
       {
       System.out.println("dayNumber monthNumber date year is "+days[dayNumber-1]+" "+month[monthNumber-1]+" "+date+" "+year);//if true print them
       }
       else if(monthNumber==2)//if it is February
       {
       if(leap(year))//checks for leap year if true
       {
       if(date<=29)//checks for date<=29
       {
       System.out.println("dayNumber monthNumber date year is "+days[dayNumber-1]+" "+month[monthNumber-1]+" "+date+" "+year);
       }
       else//if it greater then Invalid
       System.out.println("Invalid date:"+date+"Please enter from 1 to 29 leap year");
       }
       else
       {
       if(date<=28)//checks until 28 only
       {
       System.out.println("dayNumber monthNumber date year is "+days[dayNumber-1]+" "+month[monthNumber-1]+" "+date+" "+year);
       }
       else
       {
       System.out.println("Invalid date:"+date+"Please enter from 1 to 28 for february");
       }
       }
       }
       else//else it is Invalid
       {
       System.out.println("Invalid date:"+date+"Please enter from 1 to 31");
       }
      
       }
       else//month Invalid if else block
       {
       System.out.println("Invalid month:"+monthNumber+"please enter from 1 to 12");
   }
       }
       else//day Invalid else block
       {
       System.out.println("Invalid day:"+dayNumber+"please enter from 1 to 7");
       }
   }
}

leap year output

ener 4 integers representing dayNumber monthNumber date year 1 2 29 2020 dayNumber monthNumber date year is Sunday February 29 2020

correct details

ener 4 integers representing dayNumber monthNumber date year 6 3 27 1998 dayNumber monthNumber date year is Friday March 271998

invalid day

ener 4 integers representing dayNumber monthNumber date year 8 7 24 2018 Invalid day: 8please enter from 1 to 7

invalid month

ener 4 integers representing dayNumber monthNumber date year 5 13 24 2019 Invalid month:13please enter from 1 to 12

invalid date

ener 4 integers representing dayNumber monthNumber date year 5 2 29 2019 Invalid date:29please enter from 1 to 28 for february