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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); } }