import java.text.DateFormat;  import java.text.SimpleDateFormat;  import java.util.Calendar;  import java.util.Date;      public class Test0003 {            public static void main(String args[]) {          //请注意月份是从0-11          Calendar start = Calendar.getInstance();          start.set(2014,2, 1);          Calendar end = Calendar.getInstance();          end.set(2014, 3, 1);                    int sumSunday = 0;          int sumSat = 0;          SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");          while(start.compareTo(end) <= 0) {              int w = start.get(Calendar.DAY_OF_WEEK);              if(w == Calendar.SUNDAY)                  sumSunday ++;              if(w == Calendar.SATURDAY)              sumSat ++;              //打印每天              System.out.println(format.format(start.getTime()));              //循环，每次天数加1              start.set(Calendar.DATE, start.get(Calendar.DATE) + 1);          }          System.out.println("星期天总数为:" + sumSunday);            System.out.println("星期六总数为:" + sumSat);    }    }