java在很多场合下会根据当前时间计算本季度的开始时间结束时间、当前月份的开始时间结束时间、当前周的开始时间以及结束时间。我这里整理下一个时间加工类，作为工具类记录下。
一、获取计算相关时间的方法如下：(如果有错误请指出，感谢！)
public class TimeUtils {/*** 初始化时间盒子* @return timeBox*/public static TimeBox initTimeBox() throws ParseException {TimeBox timeBox = new TimeBox();Date currentDate = new Date();timeBox.setCurrentDate(currentDate);Date lastDate = getLastDate(currentDate);timeBox.setLastDate(lastDate);timeBox.setThisWeekStartDate(getCurrentWeekDateBegin(lastDate));timeBox.setThisWeekEndDate(getCurrentWeekDateEnd(lastDate));timeBox.setThisMonthStartDate(getCurrentMonthDateBegin(lastDate));timeBox.setThisMonthEndDate(getCurrentMonthDateEnd(lastDate));timeBox.setLastWeekStartDate(getLastWeekDateBegin(lastDate));timeBox.setLastWeekEndDate(getLastWeekDateEnd(lastDate));timeBox.setLastMonthStartDate(getLastMonthDateBegin(lastDate));timeBox.setLastMonthEndDate(getLastMonthDateEnd(lastDate));timeBox.setThisQuarterStartDate(getCurrentQuarterDateBegin(lastDate));timeBox.setThisQuarterEndDate(getCurrentQuarterDateEnd(lastDate));timeBox.setThisSundayDate(getCurrentWeekNumberDay(lastDate,0));timeBox.setLastSundayDate(getLastWeekDate(getCurrentWeekNumberDay(lastDate,0)));timeBox.setThisMondayDate(getCurrentWeekNumberDay(lastDate,1));timeBox.setLastMondayDate(getLastWeekDate(getCurrentWeekNumberDay(lastDate,1)));timeBox.setThisTuesdayDate(getCurrentWeekNumberDay(lastDate,2));timeBox.setLastTuesdayDate(getLastWeekDate(getCurrentWeekNumberDay(lastDate,2)));timeBox.setThisWednesdayDate(getCurrentWeekNumberDay(lastDate,3));timeBox.setLastWednesdayDate(getLastWeekDate(getCurrentWeekNumberDay(lastDate,3)));timeBox.setThisThursdayDate(getCurrentWeekNumberDay(lastDate,4));timeBox.setLastThursdayDate(getLastWeekDate(getCurrentWeekNumberDay(lastDate,4)));timeBox.setThisFridayDate(getCurrentWeekNumberDay(lastDate,5));timeBox.setLastFridayDate(getLastWeekDate(getCurrentWeekNumberDay(lastDate,5)));timeBox.setThisSaturdayDate(getCurrentWeekNumberDay(lastDate,6));timeBox.setLastSaturdayDate(getLastWeekDate(getCurrentWeekNumberDay(lastDate,6)));//确认当前周几，获取本周的所有日期timeBox.setStartDate(getEarliestDate(getLastMonthDateBegin(lastDate),getCurrentQuarterDateBegin(lastDate)));timeBox.setEndDate(getCurrentQuarterDateEnd(lastDate));return timeBox;}public static Date getEarliestDate(Date lastMonthStartDate, Date thisQuarterDateBegin) throws ParseException {SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");Date date = lastMonthStartDate;if (getDayDiffer( simpleDateFormat.parse(simpleDateFormat.format(thisQuarterDateBegin)),simpleDateFormat.parse(simpleDateFormat.format(lastMonthStartDate))) > 0){date = thisQuarterDateBegin;}return 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();}/*** pass* 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);return calendar.getTime();}/*** pass* 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);return calendar.getTime();}/*** pass* 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);return calendar.getTime();}/*** pass* 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);return calendar.getTime();}/*** pass* 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);return calendar.getTime();}/*** pass* 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);return calendar.getTime();}/*** pass* 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));return calendar.getTime();}/*** pass* 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));return calendar.getTime();}/*** pass* 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;}}/*** pass* 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();}/*** pass* 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);return calendar.getTime();}/*** pass* 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);return calendar.getTime();}/*** pass* 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;}/*** pass* 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));}}
二、TimeBox类
@Datapublic class TimeBox {Date currentDate;Date lastDate;Date thisQuarterStartDate;Date thisQuarterEndDate;Date thisMonthStartDate;Date thisMonthEndDate;Date lastMonthStartDate;Date lastMonthEndDate;Date thisWeekStartDate;Date thisWeekEndDate;Date lastWeekStartDate;Date lastWeekEndDate;Date thisSundayDate;Date lastSundayDate;Date thisMondayDate;Date lastMondayDate;Date thisTuesdayDate;Date lastTuesdayDate;Date thisWednesdayDate;Date lastWednesdayDate;Date thisThursdayDate;Date lastThursdayDate;Date thisFridayDate;Date lastFridayDate;Date thisSaturdayDate;Date lastSaturdayDate;Date startDate;Date endDate;@Overridepublic String toString() {return "TimeBox{" +"currentDate=" + currentDate + "\n" +", lastDate=" + lastDate + "\n" +", thisQuarterStartDate=" + thisQuarterStartDate + "\n" +", thisQuarterEndDate=" + thisQuarterEndDate + "\n" +", thisMonthStartDate=" + thisMonthStartDate + "\n" +", thisMonthEndDate=" + thisMonthEndDate + "\n" +", lastMonthStartDate=" + lastMonthStartDate + "\n" +", lastMonthEndDate=" + lastMonthEndDate + "\n" +", thisWeekStartDate=" + thisWeekStartDate + "\n" +", thisWeekEndDate=" + thisWeekEndDate + "\n" +", lastWeekStartDate=" + lastWeekStartDate + "\n" +", lastWeekEndDate=" + lastWeekEndDate + "\n" +", thisSundayDate=" + thisSundayDate + "\n" +", lastSundayDate=" + lastSundayDate + "\n" +", thisMondayDate=" + thisMondayDate + "\n" +", lastMondayDate=" + lastMondayDate + "\n"+", thisTuesdayDate=" + thisTuesdayDate + "\n" +", lastTuesdayDate=" + lastTuesdayDate + "\n" +", thisWednesdayDate=" + thisWednesdayDate + "\n" +", lastWednesdayDate=" + lastWednesdayDate + "\n" +", thisThursdayDate=" + thisThursdayDate + "\n" +", lastThursdayDate=" + lastThursdayDate + "\n" +", thisFridayDate=" + thisFridayDate + "\n" +", lastFridayDate=" + lastFridayDate + "\n" +", thisSaturdayDate=" + thisSaturdayDate + "\n" +", lastSaturdayDate=" + lastSaturdayDate + "\n"+", startDate=" + startDate + "\n"+", endDate=" + endDate + "\n"+'}';}public String myToString() {SimpleDateFormat sft = new SimpleDateFormat("yyyy-MM-dd");return "TimeBox{" +"currentDate=" + sft.format(currentDate) + "\n" +", lastDate=" + sft.format(lastDate )+ "\n" +", thisQuarterStartDate=" + sft.format(thisQuarterStartDate) + "\n" +", thisQuarterEndDate=" + sft.format(thisQuarterEndDate) + "\n" +", thisMonthStartDate=" + sft.format(thisMonthStartDate) + "\n" +", thisMonthEndDate=" + sft.format(thisMonthEndDate) + "\n" +", lastMonthStartDate=" + sft.format(lastMonthStartDate) + "\n" +", lastMonthEndDate=" + sft.format(lastMonthEndDate) + "\n" +", thisWeekStartDate=" + sft.format(thisWeekStartDate) + "\n" +", thisWeekEndDate=" + sft.format(thisWeekEndDate )+ "\n" +", lastWeekStartDate=" + sft.format(lastWeekStartDate) + "\n" +", lastWeekEndDate=" + sft.format(lastWeekEndDate) + "\n" +", thisSundayDate=" + sft.format(thisSundayDate) + "\n" +", lastSundayDate=" + sft.format(lastSundayDate) + "\n" +", thisMondayDate=" + sft.format(thisMondayDate) + "\n" +", lastMondayDate=" + sft.format(lastMondayDate) + "\n"+", thisTuesdayDate=" + sft.format(thisTuesdayDate) + "\n" +", lastTuesdayDate=" + sft.format(lastTuesdayDate) + "\n" +", thisWednesdayDate=" + sft.format(thisWednesdayDate) + "\n" +", lastWednesdayDate=" + sft.format(lastWednesdayDate) + "\n" +", thisThursdayDate=" + sft.format(thisThursdayDate) + "\n" +", lastThursdayDate=" + sft.format(lastThursdayDate) + "\n" +", thisFridayDate=" + sft.format(thisFridayDate) + "\n" +", lastFridayDate=" + sft.format(lastFridayDate) + "\n" +", thisSaturdayDate=" + sft.format(thisSaturdayDate) + "\n" +", lastSaturdayDate=" + sft.format(lastSaturdayDate) + "\n"+", startDate=" + sft.format(startDate) + "\n"+", endDate=" + sft.format(endDate) + "\n"+'}';}}
三、调用
System.out.println(TimeUtils.initTimeBox().myToString())
