import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import org.apache.log4j.Logger;
public class MyCalendar {
private static final Logger log = Logger.getLogger(MyCalendar.class);
private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
private static Calendar startDate = Calendar.getInstance();
private static Calendar endDate = Calendar.getInstance();
private static Date earlydate = new Date();
private static Date latedate = new Date();
/**
* 计算两个时间相差多少个年
*
* @param early
* @param late
* @return
* @throws ParseException
*/
public static int yearsBetween(String start, String end) throws ParseException {
startDate.setTime(sdf.parse(start));
endDate.setTime(sdf.parse(end));
return (endDate.get(Calendar.YEAR) - startDate.get(Calendar.YEAR));
}
/**
* 计算两个时间相差多少个月
*
* @param date1
* <String>
* @param date2
* <String>
* @return int
* @throws ParseException
*/
public static int monthsBetween(String start, String end) throws ParseException {
startDate.setTime(sdf.parse(start));
endDate.setTime(sdf.parse(end));
int result = yearsBetween(start, end) * 12 + endDate.get(Calendar.MONTH) - startDate.get(Calendar.MONTH);
return result == 0 ? 1 : Math.abs(result);
}
/**
* 计算两个时间相差多少个天
*
* @param early
* @param late
* @return
* @throws ParseException
*/
public static int daysBetween(String start, String end) throws ParseException {
// 得到两个日期相差多少天
return hoursBetween(start, end) / 24;
}
/**
* 计算两个时间相差多少小时
*
* @param early
* @param late
* @return
* @throws ParseException
*/
public static int hoursBetween(String start, String end) throws ParseException {
// 得到两个日期相差多少小时
return minutesBetween(start, end) / 60;
}
/**
* 计算两个时间相差多少分
*
* @param early
* @param late
* @return
* @throws ParseException
*/
public static int minutesBetween(String start, String end) throws ParseException {
// 得到两个日期相差多少分
return secondesBetween(start, end) / 60;
}
/**
* 计算两个时间相差多少秒
*
* @param early
* @param late
* @return
* @throws ParseException
*/
public static int secondesBetween(String start, String end) throws ParseException {
log.info("==========start:" + start + ",end:" + end);
earlydate = sdf.parse(start);
latedate = sdf.parse(end);
startDate.setTime(earlydate);
endDate.setTime(latedate);
// 设置时间为0时
startDate.set(Calendar.HOUR_OF_DAY, 0);
startDate.set(Calendar.MINUTE, 0);
startDate.set(Calendar.SECOND, 0);
endDate.set(Calendar.HOUR_OF_DAY, 0);
endDate.set(Calendar.MINUTE, 0);
endDate.set(Calendar.SECOND, 0);
// 得到两个日期相差多少秒
return ((int) (endDate.getTime().getTime() / 1000) - (int) (startDate.getTime().getTime() / 1000));
}
/**
* @param args
* @throws ParseException
*/
public static void main(String[] args) throws ParseException {
String todayStr = sdf.format(new Date());
System.out.println("两个日期之间的年数字:" + yearsBetween("1990-01-07", todayStr));
System.out.println("两个日期之间的月数字:" + monthsBetween("1990-01-07", todayStr));
System.out.println("两个日期之间的天数字:" + daysBetween("1990-01-07", todayStr));
}
}
输出结果:
两个日期之间的年数字:28
两个日期之间的月数字:345
两个日期之间的天数字:10515
原文位置:https://blog.csdn.net/l_hb123/article/details/59058209