Java里关于日期Date的相关代码达成
发布时间：2021-11-23 17:11:40 所属栏目：教程 来源：互联网
导读：/** * 将指定格式的字符串转为Date * @param sDate * @param format * 遵循 simpleDateFormat 规范 * @return */ public static Date stringToDate(String sDate, String format) { DateFormat df = new SimpleDateFormat(format); try { return df.parse(sD
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/** * 将指定格式的字符串转为Date * @param sDate * @param format * 遵循 simpleDateFormat 规范 * @return */ public static Date stringToDate(String sDate, String format) { DateFormat df = new SimpleDateFormat(format); try { return df.parse(sDate); } catch (ParseException e) { throw new RuntimeException("date format error"); } } /** * 把一个Date 按照指定格式转换为String * * @param date * @return */ public static String dateToString(Date date, String format) { DateFormat df = new SimpleDateFormat(format); return df.format(date); } /** * 计算时间差值 * @param beginDate * @param endDate * @return */ public static int computeDate(Date beginDate,Date endDate){ Calendar calBegin=Calendar.getInstance(); Calendar calEnd=Calendar.getInstance(); calBegin.setTime(beginDate); calEnd.setTime(endDate); return (int)(calEnd.getTimeInMillis()-calBegin.getTimeInMillis())/1000/60/60/24; } /** * 计算一日期加上X天之后的日期 * @param date * @param inteval * @return */ public static String resetDay(String date,int inteval){ String dateTimeFrom = ""; try { Calendar calendar = new GregorianCalendar(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); calendar.clear(); calendar.set(Integer.parseInt(date.substring(0,4)), Integer.parseInt(date.substring(5,7)) - 1, Integer .parseInt(date.substring(8, 10))); calendar.add(Calendar.DAY_OF_MONTH, inteval); dateTimeFrom = sdf.format(calendar.getTime()); return dateTimeFrom; } catch (Exception e){ e.getMessage(); return ""; } } /** * 根据日期获得对应的星期几 * @param argDate * @return */ public static String getDayOfWeek(String argDate){ if (argDate.length() != 10){ throw new IllegalArgumentException("argDate length != 8"); } int intArgY = Integer.parseInt(argDate.substring(0, 4)); int intArgM = Integer.parseInt(argDate.substring(5, 7)); int intArgD = Integer.parseInt(argDate.substring(8, 10)); Calendar calendar = GregorianCalendar.getInstance(); calendar.set(intArgY, intArgM - 1, intArgD); int returnDayOfWeek = calendar.get(Calendar.DAY_OF_WEEK); String showDate = ""; switch (returnDayOfWeek){ case 1: showDate = "日"; break; case 2: showDate = "一"; break; case 3: showDate = "二"; break; case 4: showDate = "三"; break; case 5: showDate = "四"; break; case 6: showDate = "五"; break; default: showDate = "六"; break; } return showDate; } 自己封装的DateUtil包，定期更新！如有错误，请指出，谢谢！  （编辑：江门站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
