public static Date addDay(Date date, int count)
{
return new Date(date.getTime() + 86400000L * count);
}
public static Date addWeek(Date date, int count)
{
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(3, count);
return c.getTime();
}
public static Date addMonth(Date date, int count)
{
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(2, count);
return c.getTime();
}
public static Date addYear(Date date, int count)
{
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(1, count);
return c.getTime();
}