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| | | import java.util.Date;
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| | | import java.util.List;
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| | | import org.yeshi.utils.entity.DateInfo;
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| | |
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| | | public class DateUtil {
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| | |
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| | | public static String dateDiff(String startTime, String endTime) {
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| | |
| | | if (day > 0) {
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| | | datatime = day + "天" + hour + "时" + min + "分";
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| | | } else {
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| | | if (hour > 0 ) {
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| | | if (hour > 0) {
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| | | datatime = hour + "时" + min + "分";
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| | | } else {
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| | | if (min < 0)
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| | |
| | | }
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| | | }
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| | | return datatime;
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| | | }
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| | |
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| | | public static DateInfo dateDiff3(long startTime, long endTime) throws Exception {
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| | | long nm = 1000 * 60;// 一分钟的毫秒数
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| | | long nh = 1000 * 60 * 60;// 一小时的毫秒数
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| | | long nd = 1000 * 24 * 60 * 60;// 一天的毫秒数
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| | |
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| | | // 获得两个时间的毫秒时间差异
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| | | long diff = endTime - startTime;
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| | |
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| | | int day = (int) (diff / nd);// 计算差多少天
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| | | long hour = diff % nd / nh;// 计算差多少小时
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| | | long minute = diff % nd % nh / nm;// 计算差多少分钟
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| | | long second = (diff / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - minute * 60); // 计算差多少秒
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| | |
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| | | DateInfo dateInfo = new DateInfo();
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| | | dateInfo.setDay(day);
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| | | dateInfo.setHour(hour);
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| | | dateInfo.setMinute(minute);
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| | | dateInfo.setSecond(second);
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| | | return dateInfo;
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| | | }
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| | |
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| | | /**
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| | |
| | | }
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| | |
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| | | /**
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| | | * 判断是否同一个月
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| | | * |
| | | * @param date1
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| | | * @param date2
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| | | * @return
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| | | */
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| | | public static boolean isSameMonth(Date date1, Date date2) {
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| | | Calendar calendar1 = Calendar.getInstance();
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| | | calendar1.setTime(date1);
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| | | Calendar calendar2 = Calendar.getInstance();
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| | | calendar2.setTime(date2);
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| | | int year1 = calendar1.get(Calendar.YEAR);
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| | | int year2 = calendar2.get(Calendar.YEAR);
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| | | int month1 = calendar1.get(Calendar.MONTH);
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| | | int month2 = calendar2.get(Calendar.MONTH);
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| | | System.out.println(year1 + " " + month1);
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| | | System.out.println(year2 + " " + month2);
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| | | return calendar1.get(Calendar.YEAR) == calendar2.get(Calendar.YEAR)
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| | | && calendar1.get(Calendar.MONTH) == calendar2.get(Calendar.MONTH);
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| | | }
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| | |
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| | | /**
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| | | * 指定日期加上天数后的日期
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| | | *
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| | | * @param num 增加的天数
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| | |
| | |
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| | | return format.format(ca.getTime());
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| | | }
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| | | |
| | |
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| | | /**
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| | | * 指定日期加上天数后的日期
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| | | *
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| | |
| | | ca.add(Calendar.DATE, num);
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| | | return ca.getTime();
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| | | }
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| | |
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| | |
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| | | /**
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| | | * 指定日期减去天数后的日期
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| | |
| | | }
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| | |
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| | | /**
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| | | * 指定日期减去天数后的日期
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| | | * |
| | | * @param num 减去的天数
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| | | * @param nowDate 创建时间
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| | | * @return
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| | | * @throws ParseException
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| | | */
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| | | public static String reduceDayTostring(int num, Date date) throws ParseException {
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| | | // 设置要获取到什么样的时间
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| | | SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
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| | | // 获取String类型的时间
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| | | String date_str = format.format(date);
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| | | Date currdate = format.parse(date_str);
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| | |
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| | | Calendar ca = Calendar.getInstance();
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| | | ca.setTime(currdate);
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| | | ca.add(Calendar.DATE, -num); // 日期减 如果不够减会将月变动
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| | | return format.format(ca.getTime());
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| | | }
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| | |
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| | | /**
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| | | * 计算两个日期之间相差的天数
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| | | *
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| | | * @param smdate 较小的时间
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| | |
| | | return Integer.parseInt(String.valueOf(between_days));
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| | | }
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| | |
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| | | |
| | | /**
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| | | * 字符串日期格式的计算
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| | | *
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| | | * @param smdate
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| | | * @param bdate
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| | | * @return 单位天数
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| | | * @return 单位天数
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| | | * @throws ParseException
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| | | */
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| | | public static int daysBetween2(Date minDate, Date maxDate) throws ParseException {
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| | |
| | | return daysBetween(sdf.format(minDate), sdf.format(maxDate));
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| | | }
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| | |
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| | | |
| | | /**
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| | | * 字符串日期格式的计算
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| | | *
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| | |
| | |
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| | | /**
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| | | * 随机减去几分钟
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| | | * |
| | | * @param date
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| | | * @param min 随机添加的分钟数
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| | | * @param min 随机添加的分钟数
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| | | * @return
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| | | */
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| | | public static Date reduceRandomMinute(Date date , int min) {
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| | | public static Date reduceRandomMinute(Date date, int min) {
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| | | long rand = (long) (Math.random() * 1000 * 60 * min);
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| | | long time = date.getTime() - rand;
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| | | return new Date(time);
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| | | }
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| | | |
| | | |
| | | /**
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| | | * @param args
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| | | * @throws ParseException format() 对日期进行格式化处理 parse() 将日期设置为date类型
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| | | */
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| | | public static void main(String[] args) throws ParseException {
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| | | // TODO Auto-generated method stub
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| | | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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| | | Date d1 = sdf.parse("2016-09-08 00:00:00");
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| | | Date d2 = sdf.parse("2016-09-08 00:00:00");
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| | |
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| | | System.out.println(daysBetween(d1, d2));
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| | | System.out.println(daysBetween("2016-09-08 10:10:10", "2016-09-29 00:00:00"));
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| | | /**
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| | | * 计算两时间月差
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| | | * |
| | | * @param startDate <String>
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| | | * @param endDate <String>
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| | | * @return int
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| | | * @throws ParseException
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| | | */
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| | | public static int getMonthSpace(String startDate, String endDate) throws ParseException {
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| | | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
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| | | return getMonthSpace(sdf.parse(startDate), sdf.parse(endDate));
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| | | }
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| | |
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| | | /**
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| | | * 计算两时间月差
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| | | * |
| | | * @param startDate <String>
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| | | * @param endDate <String>
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| | | * @return int
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| | | * @throws ParseException
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| | | */
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| | | public static int getMonthSpace(Date startDate, Date endDate) {
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| | | Calendar start = Calendar.getInstance();
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| | | Calendar end = Calendar.getInstance();
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| | | start.setTime(startDate);
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| | | end.setTime(endDate);
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| | | int result = end.get(Calendar.MONTH) - start.get(Calendar.MONTH);
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| | | int month = (end.get(Calendar.YEAR) - start.get(Calendar.YEAR)) * 12;
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| | | return Math.abs(month + result);
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| | | }
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| | |
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| | | public static void main(String[] args) throws ParseException {
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| | | System.out.println(getMonthSpace("2012-02", "2013-01")); |
| | | }
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| | |
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| | | } |