如何在Java中找出年月日中的两个日期之间的差异?

问题描述：

假设我有:具有 startDate 作为其属性变量的 Employee 模型和 Promotion 模型具有 promotionDate .我想找出员工在升职之前已经工作了多长时间，因此我必须找出promotionDate和startDate之间的区别.如果我将startDate命名为 employee.getStartDate()，将promotionDate命名为 promotion.getPromotionDate ，如何找到任何日期的年月日间差异，

Suppose I have : Employee model which has startDate as its property variable and Promotion model has promotionDate. I want to find out for how long employee has worked until his promotion for which I have to find difference between promotionDate and startDate. If I get startDate as employee.getStartDate() and promotionDate as promotion.getPromotionDate, how can I find difference in years months and days for any dates,

任何帮助将不胜感激.

更新:我解决了以下问题

String startDate = "2018-01-01";
String promotionDate = "2019-11-08";

LocalDate sdate = LocalDate.parse(startDate);
LocalDate pdate = LocalDate.parse(promotionDate);

LocalDate ssdate = LocalDate.of(sdate.getYear(), sdate.getMonth(), sdate.getDayOfMonth());
LocalDate ppdate = LocalDate.of(pdate.getYear(), pdate.getMonth(), pdate.getDayOfMonth());

Period period = Period.between(ssdate, ppdate);
System.out.println("Difference: " + period.getYears() + " years " 
                                  + period.getMonths() + " months "
                                  + period.getDays() + " days ");

谢谢.

答

使用

Using LocalDate.of(int year, int month, int dayOfMonth) from java8 you can create two dates and find the difference:

LocalDate firstDate = LocalDate.of(2015, 1, 1);
LocalDate secondDate = LocalDate.of(2018, 3, 4);

Period period = Period.between(firstDate, secondDate);

时期 具有诸如 .getYears()， .getMonths()等的方法.

如果具有 java.util.Date 对象而不是int值 2015，1，1 ，则可以将 Date 转换为 LocalDate 之前:

If you have java.util.Date objects instead of int values 2015, 1, 1, you can convert Date to LocalDate before:

LocalDate startLocalDate = startDate.toInstant()
        .atZone(ZoneId.systemDefault())
        .toLocalDate();

如何在Java中找出年月日中的两个日期之间的差异?

相关推荐