How to detect if a date is within this or next week in java?

Question

If I have a date of an event, such as 2011-01-03, how to detect if it is within this or next week in java ? Any sample code ?

Edit :

I thought it was a simple qu

Answer 1

for those that has to stick to JDK 7 and can't use joda.time, I wrote this method and tested.

public static boolean inSameWeek(Date date1, Date date2) {
    if (null == date1 || null == date2) {
        return false;
    }

    Calendar earlier = Calendar.getInstance();
    Calendar later = Calendar.getInstance();

    if (date1.before(date2)) {
        earlier.setTime(date1);
        later.setTime(date2);
    } else {
        earlier.setTime(date2);
        later.setTime(date1);
    }
    if (inSameYear(date1, date2)) {
        int week1 = earlier.get(Calendar.WEEK_OF_YEAR);
        int week2 = later.get(Calendar.WEEK_OF_YEAR);
        if (week1 == week2) {
            return true;
        }
    } else {
        int dayOfWeek = earlier.get(Calendar.DAY_OF_WEEK); 
        earlier.add(Calendar.DATE, 7 - dayOfWeek);
        if (inSameYear(earlier.getTime(), later.getTime())) {
            int week1 = earlier.get(Calendar.WEEK_OF_YEAR);
            int week2 = later.get(Calendar.WEEK_OF_YEAR);
            if (week1 == week2) {
                return true;
            }
        }
    }
    return false;
}

public static boolean inSameYear(Date date1, Date date2) {
    if (null == date1 || null == date2) {
        return false;
    }
    Calendar cal1 = Calendar.getInstance();
    cal1.setTime(date1);
    int year1 = cal1.get(Calendar.YEAR);
    Calendar cal2 = Calendar.getInstance();
    cal2.setTime(date2);
    int year2 = cal2.get(Calendar.YEAR);
    if (year1 == year2)
        return true;

    return false;
}