public static void main(String[] args) {
Calendar c = Calendar.getInstance();
System.out.println(c.get(Calendar.YEAR) * 100 + c.get(Calendar.WEEK_OF_YEAR));
c.set(Calendar.YEAR, 2013);
c.set(Calendar.WEEK_OF_YEAR, c.get(Calendar.WEEK_OF_YEAR));
int w = c.get(Calendar.DAY_OF_WEEK);
for (int i = 1; i <= 7; i++) {
c.set(Calendar.DAY_OF_WEEK, i);
System.out.println("該周第一天是[" + DateFormatUtils.format(c, "yyyy-MM-dd") + "]");
}
int dd = 201205;
System.out.println(dd / 100);
System.out.println(dd % (dd / 100));
}