blocks|key|1318214|text|使用java.util.Calendar。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1318215|Date+today+=+new+Date();
Calendar+cal+=+new+GregorianCalendar();
cal.setTime(today);
cal.add(Calendar.DAY_OF_MONTH,+-30);
Date+today30+=+cal.getTime();
cal.add(Calendar.DAY_OF_MONTH,+-60);
Date+today60+=+cal.getTime();
cal.add(Calendar.DAY_OF_MONTH,+-90);
Date+today90+=+cal.getTime();|code-block|syntax|javascript|1318216|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/j2se/1.5.0/docs/api/java/util/Calendar.html^0|2|I|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Use <a href="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Calendar.html" rel="noreferrer">java.util.Calendar</a>.

<pre><code>Date today = new Date();
Calendar cal = new GregorianCalendar();
cal.setTime(today);
cal.add(Calendar.DAY_OF_MONTH, -30);
Date today30 = cal.getTime();
cal.add(Calendar.DAY_OF_MONTH, -60);
Date today60 = cal.getTime();
cal.add(Calendar.DAY_OF_MONTH, -90);
Date today90 = cal.getTime();
</code></pre>

blocks|key|1318305|text|不确定从哪里获取数据，但要计算30天后的日期，可以使用Calendar类的add函数，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1318306|c.add(Calendar.DAY_OF_MONTH，-30)；//假设c为java.util.Calendar类型|1318307|现在，要确定某个特定日期是否在今天和30天前之间，您可以使用之前()和之后()函数来确定该日期是否在今天之前，但在今天之前的第30天之后。|1318308|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

not sure where you are fetching your data from but to compute the date that is say 30 days from now you can use the Calendar class's add function like so:

c.add(Calendar.DAY_OF_MONTH, -30); //assuming c is of type java.util.Calendar

Now to figure out if a particular date is between today and 30 days ago you can use the before() and after() functions to figure out if the date was before today but after the 30th day before today.

blocks|key|1318340|text|老实说，我建议你使用Joda作为你的日期和时间库。它不仅有一个优秀的API，而且还理解(即，有类用于)像周期、持续时间之类的概念。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1318341|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Honestly, I recommend you use Joda as your date&amp;time library. Not only it has a superior API, but it understands (ie, has classes for) concepts like periods, duration and things like that.

blocks|key|1533571|text|private+static+Date+daysAgo(int+days)+{
++++GregorianCalendar+gc+=+new+GregorianCalendar();
++++gc.add(Calendar.DATE,+-days);
++++return+gc.getTime();
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1533572|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>private static Date daysAgo(int days) {
 GregorianCalendar gc = new GregorianCalendar();
 gc.add(Calendar.DATE, -days);
 return gc.getTime();
}
</code></pre>

blocks|key|1533613|text|获取未来日期的代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1533614|++++public+String+futureDateByFourMonths()+{
++++Date+currentDate+=+new+Date();

++++Calendar+c+=+Calendar.getInstance();
++++c.setTime(currentDate);

++++c.add(Calendar.MONTH,+4);
++++c.add(Calendar.DATE,+1);+
++++c.add(Calendar.HOUR,+1);
++++c.add(Calendar.MINUTE,+1);
++++c.add(Calendar.SECOND,+1);

++++Date+currentDatePlusOne+=+c.getTime();

++++return+dateFormat.format(currentDatePlusOne);

}|code-block|syntax|javascript|1533615|只需更改月份并减去月数|1533616|public+String+pastDateByFourMonths()+{

++++Date+currentDate+=+new+Date();

++++Calendar+c+=+Calendar.getInstance();
++++c.setTime(currentDate);

++++c.add(Calendar.MONTH,+-4);
++++c.add(Calendar.DATE,+-1);+
++++c.add(Calendar.HOUR,+1);
++++c.add(Calendar.MINUTE,+1);
++++c.add(Calendar.SECOND,+1);

++++Date+currentDatePlusOne+=+c.getTime();

++++return+dateFormat.format(currentDatePlusOne);

}|1533617|我在某个地方找到了这个解决方案，并根据需要对其进行了修改|1533618|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

code to get future date

<pre><code> public String futureDateByFourMonths() {
 Date currentDate = new Date();

 Calendar c = Calendar.getInstance();
 c.setTime(currentDate);

 c.add(Calendar.MONTH, 4);
 c.add(Calendar.DATE, 1); 
 c.add(Calendar.HOUR, 1);
 c.add(Calendar.MINUTE, 1);
 c.add(Calendar.SECOND, 1);

 Date currentDatePlusOne = c.getTime();

 return dateFormat.format(currentDatePlusOne);

}
</code></pre>

Just change month and minus the number of months

<pre><code>public String pastDateByFourMonths() {

 Date currentDate = new Date();

 Calendar c = Calendar.getInstance();
 c.setTime(currentDate);

 c.add(Calendar.MONTH, -4);
 c.add(Calendar.DATE, -1); 
 c.add(Calendar.HOUR, 1);
 c.add(Calendar.MINUTE, 1);
 c.add(Calendar.SECOND, 1);

 Date currentDatePlusOne = c.getTime();

 return dateFormat.format(currentDatePlusOne);

}
</code></pre>

I found this solution somewhere and modified it for my need

blocks|key|1533648|text|如果你在xdaysago中放1，这意味着1天前30意味着30天前，你可以在ZoneId类中查看你的区域id。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1533649|+public+static+String+getDate(int+xdaysago){
++++++++LocalDate+localDate+=+LocalDate.now(ZoneId.of(+"Asia/Karachi"+)).minus(+Period.ofDays(+xdaysago+));
++++++++DateTimeFormatter+formatter+=+DateTimeFormatter.ofPattern("yyyy-MM-dd");
++++++++return+localDate.format(formatter);
++++}|code-block|syntax|javascript|1533650|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you put 1 in xdaysago it means 1 day ago 30 means 30 days ago, you can look your zone id in ZoneId class.
<pre><code> public static String getDate(int xdaysago){
 LocalDate localDate = LocalDate.now(ZoneId.of( &quot;Asia/Karachi&quot; )).minus( Period.ofDays( xdaysago ));
 DateTimeFormatter formatter = DateTimeFormatter.ofPattern(&quot;yyyy-MM-dd&quot;);
 return localDate.format(formatter);
 }
</code></pre>

How to get last 30 / 60 / 90 days records from given date in java?

I have some records with receivedDate. I want to fetch the records for last 30 or 60 or 90 days from received Date. How to resolve it?

Find out Last 30 Days, 60 Days and 90 Days in java

如何在java中从给定日期获取最近30 / 60 / 90天的记录？我和receivedDate有一些记录。我想获取从收到日期起最近30天、60天或90天的记录。如何解决？

问在java中查找最近30天、60天和90天
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问在java中查找最近30天、60天和90天EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问在java中查找最近30天、60天和90天
EN