package?cn.tx.file;

public?class?MyDate?{
	
	/**
	?*Class?attributes?year?month?day
	?*/
	private?int?year;
	private?int?month;
	private?int?day;
	
	/**Return?to?the?number?of?days?per?month*/
	public?int?dayOfMonth（int?month）?{
		switch?（month）?{
		case?1:
		case?3:
		case?5:
		case?7:
		case?8:
		case?10:
		case?12:
			return?31;
		case?4:
		case?6:
		case?9:
		case?11:
			return?30;
		case?2:
			if?（（year?%?4?==?0?&&?year?%?100?!=?0）||（year?%?100==?0））
				return?29;
			else
				return?28;
		}
		System.out.println（“error?month!“）;
		return?-1;
	}
	
	//The?total?number?of?days?calculated?for?a?date
	public?int?daysOfDate（MyDate?date）
	{
		int?y=date.getYear（）;
		int?m=date.getMonth（）;
		int?d=date.getDay（）;
		if?（y?			System.out.println（“error?year!“）;
		else?if?（m??12）
			System.out.println（“error?month!“）;
		else?if?（d??dayOfMonth（m））
			System.out.println（“error?day!“）;
			
		else?{
			//Four?years?one?leap?a?hundred?years?not?to?leap?four?hundred?years?to?leap?again
			int?difdays=365*（y-1）+（（y-1）/4-（y-1）/100+（y-1）/400）;
			for（int?i=1;i				difdays+=dayOfMonth（i）;
				difdays+=d;
			return?difdays;
		}
		return?-1;
	}
	
	/**The?specified?MyDate?object?for?the?year?and?the?month*/
	public?MyDate（int?y?int?m?int?d）?{
		if?（y?			System.out.println（“error?year!“）;
		else?if?（m??12）
			System.out.println（“error?month!“）;
		else?if?（d??dayOfMonth（m））
			System.out.println（“error?day!“）;
		else?{
			year?=?y;
			month?=?m;
			day?=?d;
		}
	}
	
	/**Constructing?MyDate?objects?with?current?system?time*/
	public?MyDate（）?{
		
	int?addDay=0;	
	int?leapYearDays=366;
	int?commonYearDays=365;
	int?leftDays=0;
	int?startYear=1970;
	int?sumMonth=0;
	int?i=1;
	//Get?the?number?of?milliseconds?from?1970?to?date
	long?totalMilliseconds?=?System.currentTimeMillis（）;
	//Convert?the?number?of?milliseconds?into?a?number?of?days
	int??totalDays=（int）（（totalMilliseconds）/1000/（3600*24））+1;
	//Current?date?algorithm
	while（addDay			
			if（totalDays-addDay<366）{
				
				while（leftDays
						leftDays+=dayOfMonth（i）;
						i++;
						sumMonth++;
					}
						month=sumMonth%12;
						day=totalDays-addDay-（leftDays-dayOfMonth（i-1））;
				
				}

			if（（startYear?%?4?==?0?&&?startYear?%?100?!=?0）||（startYear?%?100==?0））{
				addDay+=leapYearDays;
				sumMonth+=12;
			}else{
				addDay+=commonYearDays;
				sumMonth+=12;
			}
				startYear++;
				year=startYear-1;			
	}	
	}

	
	/**Compare?two?dates*/
	?public??boolean??equals（MyDate?date）
	{
		int?days1=daysOfDate（this）;
		int?days2=daysOfDate（date）;
		return?（days1==days2）??true:false;
	}
	
	/**Set?the?year?as?the?specified?value?year*/
	public?void?setYear（int?year）
	{
		if?（year?			System.out.println（“error?year!“）;
		else
			this.year=year;
	}	
	
	/**Return?to?the?year?of?the?current?ob