// Programmer:  Rance Cleaveland
// Date:		25 Sept. 2006
//
// This class implements simple operations on dates.

public class DateNoPrint {
    public int day   = 1;			// Day part of date
    public int month = 1;			// Month part of date
    public int year  = 1900;		// Year part of date
    public String separator = "/";	// Separator used in printing
    public String note;				// Used for comment on date.
    
    // Default constructor
    
    DateNoPrint () {
    	year = 2000;
    }
    
    // Another constructor
    
    DateNoPrint (int newDay, int newMonth, int newYear){
    	day = newDay;
    	month = newMonth;
    	year = newYear;
    }
    
    // The method for converting dates to strings
    
    public String toString () {
    	return (month + separator + day + separator + year);
    }
    
    // "incrementYear" increments the year.
    
    public void incrementYear () {
    	year++;
    }
    
    // "incrementMonth" increments the month.
    
    public void incrementMonth () {
    	if (month < 12)
    		month++;
    	else {
    		month = 1;
    		year++;
    	}
    }
    
    // "setYear" allows the year to be set to a give value
    
    public void setYear (int newYear) {
    	year = newYear;
    }
    
    // "setMonth" allows the month to be set; an error is reported
    // if the month is invalid
    
    public void setMonth (int newMonth) {
    	if ((1 <= newMonth) && (newMonth <= 12))
    		month = newMonth;
    	else
    		System.out.println ("Bad argument to setMonth:  " + newMonth);
    }
    
    // "getDay" returns the day
    
    public int getDay () {
    	return day;
    }
    
    // "getMonth" returns the month
    
    public int getMonth () {
    	return month;
    }
    
    // "getYear" returns the year
    
    public int getYear () {
    	return year;
    }
    
    // "isValentinesDay" returns true if the date is Valentines Day
    
    public boolean isValentinesDay () {
    	return ((month == 2) && (day == 14));
    }
    
    // "equals" computes an equality function on dates
    
    public boolean equals (DateNoPrint d) {
    	return (day == d.day && month == d.month && year == d.year);
    }
    
    // "isBefore" returns true if the date is before the inputted date
    
    public boolean isBefore (DateNoPrint d) {
    	if (year < d.year) return true;
    	else if (year == d.year) {
    		if (month < d.month) return true;
    		else if ( (month == d.month) && (day < d.day) )
    			return true;
    		else return false;
    	}
    	else return false;
    }
}