Question

Java program

Create class DateClass with the following capabilities:

Output the date in multiple formats, such as

MM/DD/YYYY
June 14, 1992
DDD YYYY

Use overloaded constructors to create DateClass objects initialized with dates of the formats in part (a). In the first case the constructor should receive three integer values. In the second case it should receive a String and two integer values. In the third case it should receive two integer values, the first of which represents the day number in the year.

If someone enters the day as the 14 and the month is june, the program should be able to convert that to the day out of 365 for the third format. No null values. The program should convert whatever the user enters and print out all three date formats correctly.

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Below java classes are created.

DateClass.java :

//Java class
public class DateClass {

   //constructor
   public DateClass(int mm,int dd,int yyyy)
   {
       //print date in the format MM/DD/YYYY
       System.out.println(mm+"/"+dd+"/"+yyyy);
   }
   //overloaded constructor
   public DateClass(String mm,int dd,int yyyy)
   {
       //print date in the format June 14, 1992
       System.out.println(mm+" "+dd+","+yyyy);
      
   }
   public DateClass(int dd,int yyyy)
   {
       //print date in the format DDD YYYY
       System.out.println(dd+" "+yyyy);
   }
  
}
**********************************

DateClassTest.java :

import java.util.*;//import package
import java.time.LocalDate;
//Java class
public class DateClassTest {
   // entry point of program , main() method
   public static void main(String[] args) {
       // creating object of scanner class
       Scanner sc = new Scanner(System.in);
       // asking user to enter day
       System.out.print("Enter Day : ");
       int day = sc.nextInt();// reading day
       // asking user to enter month
       System.out.print("Enter Month : ");
       String month = sc.next();// reading month
       // asking user to enter year
       System.out.print("Enter Year : ");
       int year = sc.nextInt();// reading year
       // declaring variable to store month number
       int monthNumber = 0;
       // array to store month number
       String[] months = { "january", "february", "march", "april", "may", "june", "july", "august", "september",
               "october", "november", "december" };
       // finding month number using for loop
       for (int i = 0; i < months.length; i++) {
           if (month.toLowerCase().equals(months[i])) {
               // if month is found in the month array
               monthNumber = i;// set i as month number
               break;// break the loop
           }
       }
       // creating object of DateClass
       DateClass date2 = new DateClass(monthNumber + 1, day, year);// object 1
       DateClass date1 = new DateClass(month, day, year);// object 2
       // getting day number from the date
       int dayNumber = LocalDate.of(year, monthNumber + 1, day).getDayOfYear();
       DateClass date3 = new DateClass(dayNumber, year);
   }

}

======================================================

Output : Compile and Run DateClassTest,java to get the screen as shown below

Screen 1 :DateClassTest.java

Screen 2 :

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.