Create a program to test the following class:

import java.util.*;

public class Date{

private int year;

private int month;

private int day;

private int dayOfWeekIndex;

private static final int MonthPerYear = 12;

private static final int EndOfWeek = 6;

private static final int BeginningDayOfWeek = 0;

String [] daysInWeek = {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};

public Date(int year, int month, int day){

if (year < 0 || month < 0 || month > 12 || day < 0 || day > 31){

throw new IllegalArgumentException();

}

this.year = year;

this.month = month;

this.day = day;

}

//If no initial values are set, calculate the today's date.

public Date(){

int dayCount = 0;

while (dayCount < this.daysSinceEpoch()){

this.nextDay();

++dayCount;

}

}

//getDay() returns day

public int getDay(){

return this.day;

}

//getMonth() returns month

public int getMonth(){

return this.month;

}

//getYear() returns year

public int getYear(){

return this.year;

}

//getdayOfWeek() returns day of week

public String getDayOfWeek(){

return this.daysInWeek[this.dayOfWeekIndex];

}

//isLeapYear() returns whether year is leap year or not

public boolean isLeapYear(){

if ((this.year % 4 == 0) && (this.year % 100 != 0) || (this.year % 400 == 0)){

return true;

}

else{

return false;

}

}

//nextDay() returns next day

public void nextDay(){

if (this.getDay() < this.daysInMonth() ){

++this.day;

}

else if (this.getDay() == this.daysInMonth() && this.getMonth() < MonthPerYear){

++this.month;

this.day = 1;

}

else if (this.getMonth() == MonthPerYear){

++this.year;

this.month = 1;

this.day = 1;

}

if (this.dayOfWeekIndex == EndOfWeek){

this.dayOfWeekIndex = BeginningDayOfWeek;

}

++this.dayOfWeekIndex;

}

//toString() converts date to string and returns the value

public String toString(){

return this.year + "/" + this.month + "/" + this.day;

}

//equals() compares to objects,

public boolean equals (Object o){

if (o instanceof Date){

Date others = (Date) o;

//Return whether the attributes are the same for each.

return this.year == others.year && this.month == others.month && this.day == others.day;

}

else {

return false;

}

}

//A method that returns the days in a month

public int daysInMonth(){

int [] months = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

if (this.isLeapYear()){

months[1] = 29;

}

if (this.month == 1){

return months[0];

}

else{

return months[this.month - 1];

}

}

public int daysSinceEpoch(){

return (int) ((System.currentTimeMillis() + TimeZone.getDefault().getRawOffset()) / 1000 / 60 / 60 / 24);

}

}