/**
 *An easter sunday will occur on a certain day of a certain month, which can be
 *calculated based on the year.
 */
public class EasterSunday
{
	private int year;
	private int month;
	private int day;
	
	/**
	 *Creates a new easter sunday with year 0.
	 */
	public EasterSunday()
	{
		this(0);
	}
	
	/**
	 *Creates a new easter sunday with the year given.
	 *@param newYear Specifies the year.
	 */
	public EasterSunday(int newYear)
	{
		year=newYear;
		Calc();
	}
	
	/**
	 *Calculates the month and day of easter sunday.
	 */
	private void Calc()
	{
		
		int a=year%19;
		int b=year/100;int c=year%100;
		int d=b/4;int e=b%4;
		int g=(8*b+13)/25;
		int h=(19*a+b-d-g+15)%30;
		int j=c/4;int k=c%4;
		int m=(a+11*h)/319;
		int r=(2*e+2*j-k-h+m+32)%7;
		month= (h-m+r+90)/25;
		day=(h-m+r+month+19)%32;
	}
	
	/**
	 *Returns the month of easter.
	 *@return Returns the month.
	 */
	public String getMonth()
	{
		Month monthStr= new Month(month);
		return monthStr.getMonth();
	}
	
	/**
	 *Returns the day of easter.
	 *@return Returns the day.
	 */
	public int getDay()
	{
		return day;
	}
	
	/**
	 *Returns All of the data.
	 *@return Returns all data.
	 */
	public String toString()
	{
		return "Easter will occur on day "+day+" of "+getMonth()+".";
	}
}

/**	output from demo
Enter the year: 2002
Easter will occur on day 31 of March.
Press any key to continue...
*/