| | |
| | |
|
| | | return datatime;
|
| | | }
|
| | | |
| | |
|
| | | /**
|
| | | * 通过时间秒毫秒数判断两个时间的间隔
|
| | | * @param date1
|
| | | * @param date2
|
| | | * @return
|
| | | */
|
| | | public static int differentDaysByMillisecond(Date start, Date end) {
|
| | | return (int) ((end.getTime() - start.getTime()) / (1000*3600*24));
|
| | | }
|
| | | |
| | | * |
| | | * @param date1
|
| | | * @param date2
|
| | | * @return
|
| | | */
|
| | | public static int differentDaysByMillisecond(Date start, Date end) {
|
| | | return (int) ((end.getTime() - start.getTime()) / (1000 * 3600 * 24));
|
| | | }
|
| | |
|
| | | public String transferLongToDate(String dateFormat, Long millSec) {
|
| | | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
|
| | | Date date = new Date(millSec);
|
| | |
| | | return false;
|
| | | }
|
| | | }
|
| | | |
| | |
|
| | | /**
|
| | | * 指定日期加上天数后的日期
|
| | | *
|
| | | * @param num
|
| | | * 增加的天数
|
| | | * @param nowDate
|
| | | * 创建时间
|
| | | * @param num 增加的天数
|
| | | * @param nowDate 创建时间
|
| | | * @return
|
| | | * @throws ParseException
|
| | | */
|
| | | public static String plusDay(int num, String nowDate) throws ParseException {
|
| | | SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
|
| | | Date currdate = format.parse(nowDate);
|
| | | |
| | |
|
| | | Calendar ca = Calendar.getInstance();
|
| | | ca.setTime(currdate);
|
| | | ca.add(Calendar.DATE, num);
|
| | | |
| | |
|
| | | return format.format(ca.getTime());
|
| | | }
|
| | | |
| | | |
| | |
|
| | | /**
|
| | | * 指定日期加上天数后的日期
|
| | | *
|
| | | * @param num
|
| | | * 增加的天数
|
| | | * @param nowDate
|
| | | * 创建时间
|
| | | * @param num 增加的天数
|
| | | * @param nowDate 创建时间
|
| | | * @return
|
| | | * @throws ParseException
|
| | | */
|
| | | public static String plusDay(int num, Date currdate) throws ParseException {
|
| | | SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
|
| | | |
| | |
|
| | | Calendar ca = Calendar.getInstance();
|
| | | ca.setTime(currdate);
|
| | | ca.add(Calendar.DATE, num);
|
| | | |
| | |
|
| | | return format.format(ca.getTime());
|
| | | }
|
| | | |
| | |
|
| | | /**
|
| | | * 指定日期减去天数后的日期
|
| | | *
|
| | | * @param num
|
| | | * 减去的天数
|
| | | * @param nowDate
|
| | | * 创建时间
|
| | | * @param num 减去的天数
|
| | | * @param nowDate 创建时间
|
| | | * @return
|
| | | * @throws ParseException
|
| | | */
|
| | | public static String reduceDay(int num, String nowDate) throws ParseException {
|
| | | SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
|
| | | Date currdate = format.parse(nowDate);
|
| | | |
| | |
|
| | | Calendar ca = Calendar.getInstance();
|
| | | ca.setTime(currdate);
|
| | | ca.add(Calendar.DATE, -num); // 日期减 如果不够减会将月变动
|
| | | |
| | |
|
| | | return format.format(ca.getTime());
|
| | | }
|
| | | |
| | | /**
|
| | | * 计算两个日期之间相差的天数 |
| | | * @param smdate 较小的时间 |
| | | * @param bdate 较大的时间 |
| | | * @return 相差天数 |
| | | * @throws ParseException |
| | | * calendar 对日期进行时间操作
|
| | | * getTimeInMillis() 获取日期的毫秒显示形式
|
| | | */
|
| | | public static int daysBetween(Date smdate,Date bdate) throws ParseException |
| | | { |
| | | Calendar cal = Calendar.getInstance();
|
| | | cal.setTime(smdate);
|
| | | long time1 = cal.getTimeInMillis();
|
| | | cal.setTime(bdate);
|
| | | long time2 = cal.getTimeInMillis(); |
| | | long between_days=(time2-time1)/(1000*3600*24); |
| | | return Integer.parseInt(String.valueOf(between_days)); |
| | | }
|
| | | |
| | | /**
|
| | | * 字符串日期格式的计算
|
| | | * @param smdate
|
| | | * @param bdate
|
| | | * @return
|
| | | * @throws ParseException
|
| | | */
|
| | | public static int daysBetween(String smdate,String bdate) throws ParseException{ |
| | | SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); |
| | | Calendar cal = Calendar.getInstance(); |
| | | cal.setTime(sdf.parse(smdate)); |
| | | long time1 = cal.getTimeInMillis(); |
| | | cal.setTime(sdf.parse(bdate)); |
| | | long time2 = cal.getTimeInMillis(); |
| | | long between_days=(time2-time1)/(1000*3600*24); |
| | | return Integer.parseInt(String.valueOf(between_days)); |
| | | } |
| | | |
| | |
|
| | | /**
|
| | | * 指定日期减去天数后的日期
|
| | | * |
| | | * @param num 减去的天数
|
| | | * @param nowDate 创建时间
|
| | | * @return
|
| | | * @throws ParseException
|
| | | */
|
| | | public static Date reduceDay(int num, Date date) throws ParseException {
|
| | | // 设置要获取到什么样的时间
|
| | | SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
|
| | | // 获取String类型的时间
|
| | | String date_str = format.format(date);
|
| | | Date currdate = format.parse(date_str);
|
| | |
|
| | | Calendar ca = Calendar.getInstance();
|
| | | ca.setTime(currdate);
|
| | | ca.add(Calendar.DATE, -num); // 日期减 如果不够减会将月变动
|
| | |
|
| | | return ca.getTime();
|
| | | }
|
| | |
|
| | | /**
|
| | | * 计算两个日期之间相差的天数
|
| | | * |
| | | * @param smdate 较小的时间
|
| | | * @param bdate 较大的时间
|
| | | * @return 相差天数
|
| | | * @throws ParseException calendar 对日期进行时间操作 getTimeInMillis() 获取日期的毫秒显示形式
|
| | | */
|
| | | public static int daysBetween(Date smdate, Date bdate) throws ParseException {
|
| | | Calendar cal = Calendar.getInstance();
|
| | | cal.setTime(smdate);
|
| | | long time1 = cal.getTimeInMillis();
|
| | | cal.setTime(bdate);
|
| | | long time2 = cal.getTimeInMillis();
|
| | | long between_days = (time2 - time1) / (1000 * 3600 * 24);
|
| | | return Integer.parseInt(String.valueOf(between_days));
|
| | | }
|
| | |
|
| | | /**
|
| | | * 字符串日期格式的计算
|
| | | * |
| | | * @param smdate
|
| | | * @param bdate
|
| | | * @return
|
| | | * @throws ParseException
|
| | | */
|
| | | public static int daysBetween(String smdate, String bdate) throws ParseException {
|
| | | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
|
| | | Calendar cal = Calendar.getInstance();
|
| | | cal.setTime(sdf.parse(smdate));
|
| | | long time1 = cal.getTimeInMillis();
|
| | | cal.setTime(sdf.parse(bdate));
|
| | | long time2 = cal.getTimeInMillis();
|
| | | long between_days = (time2 - time1) / (1000 * 3600 * 24);
|
| | | return Integer.parseInt(String.valueOf(between_days));
|
| | | }
|
| | |
|
| | | /**
|
| | | * 返回中间日期
|
| | | * |
| | | * @param startTime
|
| | | * @param endTime
|
| | | * @return
|
| | |
| | | }
|
| | | return listDate;
|
| | | }
|
| | | |
| | | |
| | | /**
|
| | | * @param args
|
| | | * @throws ParseException
|
| | | * format() 对日期进行格式化处理
|
| | | * parse() 将日期设置为date类型
|
| | | */
|
| | | public static void main(String[] args) throws ParseException { |
| | | // TODO Auto-generated method stub |
| | | SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); |
| | | Date d1=sdf.parse("2016-09-08 00:00:00"); |
| | | Date d2=sdf.parse("2016-09-08 00:00:00");
|
| | | |
| | | System.out.println(daysBetween(d1,d2)); |
| | | System.out.println(daysBetween("2016-09-08 10:10:10","2016-09-29 00:00:00")); |
| | | } |
| | |
|
| | | |
| | | /**
|
| | | * @param args
|
| | | * @throws ParseException format() 对日期进行格式化处理 parse() 将日期设置为date类型
|
| | | */
|
| | | public static void main(String[] args) throws ParseException {
|
| | | // TODO Auto-generated method stub
|
| | | SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
|
| | | Date d1 = sdf.parse("2016-09-08 00:00:00");
|
| | | Date d2 = sdf.parse("2016-09-08 00:00:00");
|
| | |
|
| | | System.out.println(daysBetween(d1, d2));
|
| | | System.out.println(daysBetween("2016-09-08 10:10:10", "2016-09-29 00:00:00"));
|
| | | }
|
| | |
|
| | | } |