Question

/////////////////JAVA PLEASE/////////////////////////////////

Create a class called GVdate to keep track of a calendar date including month, day and year.  You can do simple things like checking if it is your birthday, advancing to the next day, checking if a given date is valid and checking if it is a leap year.

Class Fields/Instance Variables

• Provide appropriate names and data types for each of the private instance variables:
  • the month, day and year (int)
  • two final integers that represent YOUR birthday (month and day)

Constructors

• public GVdate( )– this is the default constructor; it assigns the following initial values to the instance variables:  
  • month: 10
  • day: 12
  • year: 2020
• public GVdate (int m, int d, int y) – set the instance variables to the provided input parameters. For now, assume that the input parameters are correct.

Accessor Methods

• public int getMonth( ) – return the month.  
• public int getDay( ) – return the day.  
• public int getYear( ) – return the year
• public String toString() – return a formatted date string (for example "10/12/2020").  
• public boolean isMyBirthday () – return true if the date is YOUR birthday. Otherwise return false.

Mutator Methods

• public void setMonth(int m)- set the month to the input parameter. For now, assume the value for the month will not create an invalid date.
• public void setDay(int d)- set the day to the input parameter. For now, assume the value for the day will not create an invalid date.
• public void setYear(int y)- set the year to the input parameter. For now, assume the value for the year will not create an invalid date.
• public void setDate (int m, int d, int y) – set the instance variables to the values of the input parameters. For now, assume the values of the input parameters will not create an invalid date.

Answer 1

Please find the below solution for this problem:-

package qvdate;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class GVdate {
   private int calDate;
   private int calMonth;
   private int calYear;
   private final int birthday=26;
   private final int birthMonth=12;
  
   public GVdate() {
       this.calDate=12;
       this.calMonth=10;
       this.calYear=2020;  
   }
   public GVdate (int m, int d, int y) {
       this.calDate=d;
       this.calMonth=m;
       this.calYear=y;
   }
   public String toString() {
       return calMonth+"/"+calDate+"/"+calYear;
   }
  
   public boolean isMyBirthday() {
       if(calMonth==birthMonth &&calDate==birthday) {
           return true;
       }
       return false;
   }
   public void setDate (int m, int d, int y) {
       this.calDate=d;
       this.calMonth=m;
       this.calYear=y;
      
   }
  
   public boolean isDateValid() {
       String dateStr=toString();
DateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
sdf.setLenient(false);
try {
sdf.parse(dateStr);
} catch (ParseException e) {
return false;
}
return true;
}
   public boolean isLeapYear() {
boolean leapYear = false;

if(calYear % 4 == 0)
{
if( calYear % 100 == 0)
{
if ( calYear % 400 == 0)
   leapYear = true;
else
   leapYear = false;
}
else
   leapYear = true;
}
else
   leapYear = false;
  
return leapYear;
   }
   public Date advancingtonextday() {
       Calendar c = Calendar.getInstance();
       DateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
sdf.setLenient(false);
Date currentDate = null;
try {
   currentDate=sdf.parse(toString());
} catch (ParseException e) {

}
       c.setTime(currentDate);
       c.add(Calendar.DATE, 1);
       Date newDate = c.getTime();
       return newDate;
   }
  
   public int getCalDate() {
       return calDate;
   }
   public void setCalDate(int calDate) {
       this.calDate = calDate;
   }
   public int getCalMonth() {
       return calMonth;
   }
   public void setCalMonth(int calMonth) {
       this.calMonth = calMonth;
   }
   public int getCalYear() {
       return calYear;
   }
   public void setCalYear(int calYear) {
       this.calYear = calYear;
   }
  
  
  
  
}