获取两个joda日期之间的确切年,天或月 [英] Getting the exact years or days or months between two joda date
问题描述
我需要获得两个joda日期时间之间在天数,月数和年数方面的确切差异.我正在使用以下代码:
I need to get the exact difference in terms of days and months and years between two joda date time. I am using the code below:
DateTime jodaStartTime=new DateTime(startTime);
DateTime jodaEndTime=new DateTime(endTime);
Period period = new Period(jodaStartTime, jodaEndTime);
System.out.print(period.getYears() + " years, ");
System.out.print(period.getMonths() + " months, ");
但是,我需要得到确切的年份,而不是2年,我应该得到2010,2011 或代替18个月(涵盖所有月份),我需要使范围介于1到12之间.
However, I need to get exact years for example instead of 2 years, I shoud get 2010,2011 or instead of 18 months (covering all months), I need to get the range between 1 to 12.
首先,我想更改此代码,以便可以使用Java 8 time,那么如何使用Java 8 time呢?
First, I want to change this code so I can use Java 8 time, so how to do that with Java 8 time?
推荐答案
您可以保留一个列表并根据您的不同来填写它.我已经针对年份案例实现了一种方法:
You can keep a list and fill it depending on the difference you have. I have implemented a method as for year case to give an idea:
private static LinkedList yearLister(int yearCount, int startingYear, int endYear){
LinkedList years = new LinkedList();
if (yearCount < 0){ yearCount = -yearCount; }
// yearCount can be negative.
// When that is the case, you won't be able to add elements to your
// list. This statement deals with that.
if(startingYear > endYear){
for(int i = 0; i < yearCount; i++){
years.add(endYear + i + 1 );
}
} else if (startingYear < endYear) {
for(int i = 0; i < yearCount - 1; i++){
years.add(startingYear + i + 1);
}
}
System.out.println(years);
return years;
}
例如,主要创建2022年和2017年的简单日期,
In the main, with creating simple dates for years 2022 and 2017, for example:
Date d1,d2 = null; // need these for formatting
SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy HH:mm");
String dateStart = "01/01/2022 05:30";
String dateStop = "02/2/2017 06:31";
d1 = format.parse(dateStart);
d2 = format.parse(dateStop);
DateTime jodaStartTime=new DateTime(d1);
DateTime jodaEndTime=new DateTime(d2);
int startingYear = jodaStartTime.getYear();
int endYear = jodaEndTime.getYear();
将以下行添加到主行时:
When you add the following line to the main:
yearLister(yearCount, startingYear, endYear);
输出为:[2018、2019、2020、2021]
The output is: [2018, 2019, 2020, 2021]
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