public class Date { private int day; private int month; private int year;

public Date() { day = 0; month = 0; year = 0; }

public void setDay(int d) { day = d; } public void setMonth(int m) { month = m; } public void setYear(int y) { year = y; } public void setDate(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; } }

implement the Comparable interface for the Date class. A date is considered less than another date if it comes before it in time.