import java.util.*;				// Comparator interface is part of this package
// see DateWithComparison.java for comments, this only differs by adding Comparator and compares and equals method
public class DateWithComparison2 implements Comparator, Comparable
{
	private int day, month, year;
	
	public DateWithComparison2()
	{
		day=1;
		month=1;
		year=1970;		// this date is known as the epoch in Unix/Linux systems
	}
	
	public DateWithComparison2(int d, int m, int y)
	{
		day=d;
		month=m;
		year=y;
	}
	
	public int getDay() {return day;}
	public int getMonth() {return month;}
	public int getYear() {return year;}
	public void setDay(int d) {day=d;}
	public void setMonth(int m) {month=m;}
	public void setYear(int y) {year=y;}
	public String toString()
	{
		return month + "/" + day + "/" + year;
	}
	
	public int compare(Object o1, Object o2)			// receives two Objects, hopefully both are DateWithComparison2's
	{
		int d1=((DateWithComparison2)o1).getDay();		// need to downcast, store each day, month and year in separate
		int d2=((DateWithComparison2)o2).getDay();				// variables for ease later
		int m1=((DateWithComparison2)o1).getMonth();		
		int m2=((DateWithComparison2)o2).getMonth();					
		int y1=((DateWithComparison2)o1).getYear();					
		int y2=((DateWithComparison2)o2).getYear();			
		if(y1<y2) return -1; 							// same basic comparison strategy as compareTo
		else if(y1>y2) return 1;
		else if(m1<m2) return -1;
		else if(m1>m2) return 1;
		else if(d1<d2) return -1;
		else if(d1>d2) return 1;
		else return 0;
	}
	
	public boolean equals(Object o)
	{
		if(this.compareTo(o)==0) return true;		// call on compareTo (or we could have used compare(this, o) to do the work
		else return false;							// if it returns 0, we know the Dates are the same
	}
	
	public int compareTo(Object o)
	{
		int otherDay=((DateWithComparison)o).getDay();
		int otherMonth=((DateWithComparison)o).getMonth();
		int otherYear=((DateWithComparison)o).getYear();
		if(year>otherYear) return 1;
		else if(year<otherYear) return -1;
		else if(month>otherMonth) return 1;
		else if(month<otherMonth) return -1;
		else if(day>otherDay) return 1;
		else if(day<otherDay) return -1;
		else return 0;
	}
}