JAVA获取一个月的开始与结束时间以及两个日期相差几个月

本文主要是介绍JAVA获取一个月的开始与结束时间以及两个日期相差几个月，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

一、一个月的开始与结束时间代码如下

    /*** 获取指定月的开始日期* @param currentDate* @return*/public static Date getStartDate(String currentDate){SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Calendar c = Calendar.getInstance();try {c.setTime(sdf.parse(currentDate));c.add(Calendar.MONTH, 0);//设置为1号,当前日期既为本月第一天c.set(Calendar.DAY_OF_MONTH, 1);} catch (ParseException e) {e.printStackTrace();}return c.getTime();}/*** 获取指定月的结束日期* @param currentDate* @return*/public static Date getEndDate(String currentDate){SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Calendar c = Calendar.getInstance();try {c.setTime(sdf.parse(currentDate));c.set(Calendar.DAY_OF_MONTH, c.getActualMaximum(Calendar.DAY_OF_MONTH));c.set(Calendar.HOUR_OF_DAY, 23);c.set(Calendar.MINUTE, 59);c.set(Calendar.SECOND, 59);} catch (ParseException e) {e.printStackTrace();}return c.getTime();}

二、两个日期相差几个月

    /*** 获取两个日期相差几个月* @param start* @param end* @return*/public static int getMonth(Date start, Date end) {if (start.after(end)) {Date t = start;start = end;end = t;}Calendar startCalendar = Calendar.getInstance();startCalendar.setTime(start);Calendar endCalendar = Calendar.getInstance();endCalendar.setTime(end);Calendar temp = Calendar.getInstance();temp.setTime(end);temp.add(Calendar.DATE, 1);int year = endCalendar.get(Calendar.YEAR) - startCalendar.get(Calendar.YEAR);int month = endCalendar.get(Calendar.MONTH) - startCalendar.get(Calendar.MONTH);if ((startCalendar.get(Calendar.DATE) == 1)&& (temp.get(Calendar.DATE) == 1)) {return year * 12 + month + 1;} else if ((startCalendar.get(Calendar.DATE) != 1) && (temp.get(Calendar.DATE) == 1)) {return year * 12 + month;} else if ((startCalendar.get(Calendar.DATE) == 1) && (temp.get(Calendar.DATE) != 1)) {return year * 12 + month;} else {return (year * 12 + month - 1) < 0 ? 0 : (year * 12 + month);}}

三、测试代码

    public static void main(String[] args) throws ParseException{SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String startDate = "2018-10-15 00:00:00";String ednDate = "2019-11-10 23:59:59";Date sdate = getStartDate(startDate);Date edate = getEndDate(startDate);System.out.println("开始时间：" + sdf.format(sdate));System.out.println("结束时间：" + sdf.format(edate));int month = getMonth(sdf.parse(startDate), sdf.parse(ednDate));System.out.println("两者之间相差：" + month);}

 

这篇关于JAVA获取一个月的开始与结束时间以及两个日期相差几个月的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！

---