两个日期间隔天数

最新推荐文章于 2023-12-01 17:18:01 发布

原创最新推荐文章于 2023-12-01 17:18:01 发布 · 839 阅读

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本文介绍了一种使用Java编程语言计算两个日期之间天数差的方法。通过将日期格式化为yyyy-MM-dd格式，并利用SimpleDateFormat和Calendar类进行日期解析及调整，最终计算出了指定日期范围内的总天数。

public int getGapCount2() {
	Date startDate = null;
	Date endDate = null;
	SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
	try {
		startDate = sdf.parse("2018-01-04");
		endDate = sdf.parse("2018-01-06");
	} catch (java.text.ParseException e) {
		e.printStackTrace();
	}
	
	Calendar startCalendar = Calendar.getInstance();
	startCalendar.setTime(startDate);
	startCalendar.set(Calendar.HOUR_OF_DAY, 0);
	startCalendar.set(Calendar.MINUTE, 0);
	startCalendar.set(Calendar.SECOND, 0);
	startCalendar.set(Calendar.MILLISECOND, 0);

	Calendar endCalendar = Calendar.getInstance();
	endCalendar.setTime(endDate);
	endCalendar.set(Calendar.HOUR_OF_DAY, 0);
	endCalendar.set(Calendar.MINUTE, 0);
	endCalendar.set(Calendar.SECOND, 0);
	endCalendar.set(Calendar.MILLISECOND, 0);

	return (int) ((endCalendar.getTime().getTime() - startCalendar.getTime().getTime()) / (1000 * 60 * 60 * 24));
}