根据传入的日期获取开始时间和结束时间，到时分秒级别
如果不要时分秒，SimpleDateFormat sdf = new SimpleDateFormat(“yyyy-MM-dd”);
格式即可
public class TimeUtil {public static void main(String[] args) {System.out.println("-------------------------------");SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println(sdf.format(getCurrentYearDateEnd(new Date())));}/*** 获取昨天日期* @return date*/public static Date getLastDate(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.DATE,-1);return calendar.getTime();}/*** 返回当前月份的开始时间* @return Date*/public static Date getCurrentMonthDateBegin(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DAY_OF_MONTH,1);calendar.add(Calendar.MONTH,0);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);return calendar.getTime();}/*** 返回当前月份的结束时间* @return Date*/public static Date getCurrentMonthDateEnd(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);int lastDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);calendar.set(Calendar.DAY_OF_MONTH,lastDay);calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);return calendar.getTime();}/*** 返回上月的开始时间* @return Date*/public static Date getLastMonthDateBegin(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DAY_OF_MONTH,1);calendar.add(Calendar.MONTH,-1);calendar.set(Calendar.DAY_OF_MONTH,1);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);return calendar.getTime();}/*** 返回上月的结束时间* @return Date*/public static Date getLastMonthDateEnd(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DAY_OF_MONTH,1);calendar.add(Calendar.MONTH,0);calendar.add(Calendar.DATE,-1);calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);return calendar.getTime();}/*** 返回当前周的开始时间* @return Date*/public static Date getCurrentWeekDateBegin(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);int dateBegin = calendar.getActualMinimum(Calendar.DAY_OF_WEEK);calendar.set(Calendar.DAY_OF_WEEK,dateBegin);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);return calendar.getTime();}/*** 返回当前周的结束时间* @return Date*/public static Date getCurrentWeekDateEnd(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);int dateEnd = calendar.getActualMaximum(Calendar.DAY_OF_WEEK);calendar.set(Calendar.DAY_OF_WEEK,dateEnd);calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);return calendar.getTime();}/*** 返回上周的开始时间* @return Date*/public static Date getLastWeekDateBegin(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.WEEK_OF_MONTH,-1);calendar.set(Calendar.DAY_OF_WEEK,calendar.getActualMinimum(Calendar.DAY_OF_WEEK));calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);return calendar.getTime();}/*** 返回上周的结束时间* @return Date*/public static Date getLastWeekDateEnd(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.WEEK_OF_MONTH,-1);calendar.set(Calendar.DAY_OF_WEEK,calendar.getActualMaximum(Calendar.DAY_OF_WEEK));calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);return calendar.getTime();}/*** 返回当前周第几天的日期* 0 为当前周的周日* 1 ~ 6 为当前周的周一到周六* @return Date*/public static Date getCurrentWeekNumberDay(Date date, int num){if (num >= 0 && num <= 6){Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DAY_OF_WEEK,calendar.getActualMinimum(Calendar.DAY_OF_WEEK));calendar.add(Calendar.DAY_OF_WEEK,num);return calendar.getTime();}else {return null;}}/*** 返回上一周的当前时间* @return Date*/public static Date getLastWeekDate(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.DAY_OF_WEEK,-7);return calendar.getTime();}/*** 返回当前季度的开始时间* @return Date*/public static Date getCurrentQuarterDateBegin(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);int month = calendar.get(Calendar.MONTH);int quarter = month / 3 + 1;int startMonth = 1;if (quarter == 2){startMonth = 4;}else if(quarter == 3){startMonth = 7;}else if(quarter == 4){startMonth = 10;}calendar.set(Calendar.MONTH,startMonth - 1);calendar.set(Calendar.DAY_OF_MONTH,1);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);return calendar.getTime();}/*** 返回当前季度结束时间* @return Date*/public static Date getCurrentQuarterDateEnd(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);int month = calendar.get(Calendar.MONTH);int quarter = month / 3 + 1;int endMonth = 3;if (quarter == 2){endMonth = 6;}else if(quarter == 3){endMonth = 9;}else if(quarter == 4){endMonth = 12;}calendar.set(Calendar.MONTH,endMonth - 1);int lastDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);calendar.set(Calendar.DAY_OF_MONTH,lastDay);calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);return calendar.getTime();}/*** 返回当前年度的开始时间* @return Date*/public static Date getCurrentYearDateBegin(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);int month = calendar.get(Calendar.MONTH);calendar.set(Calendar.MONTH,0);calendar.set(Calendar.DAY_OF_MONTH,1);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);return calendar.getTime();}/*** 返回当前年度结束时间* @return Date*/public static Date getCurrentYearDateEnd(Date date){Calendar calendar = Calendar.getInstance();calendar.setTime(date);int month = calendar.get(Calendar.MONTH);calendar.set(Calendar.MONTH,11);calendar.set(Calendar.DAY_OF_MONTH,31);calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);return calendar.getTime();}/*** 某年某月是星期几* @param date date* @return （周日返回0，周一到周六就是1-6）*/public static int getWeek(Date date) {Calendar calendar = Calendar.getInstance();// 设置calendar.setTime(date);return calendar.get(Calendar.DAY_OF_WEEK) - 1;}/*** 获取日期时间差* @param startDate 开始时间* @param endDate 结束时间* @return day* @throws ParseException*/public static int getDayDiffer(Date startDate, Date endDate) throws ParseException {SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");long startDateTime = dateFormat.parse(dateFormat.format(startDate)).getTime();long endDateTime = dateFormat.parse(dateFormat.format(endDate)).getTime();return (int) ((endDateTime - startDateTime) / (1000 * 3600 * 24));}}
