blocks|key|1437878|text|也许您想了解有关调度ScheduledExecutorService的知识，您也可以看看Quartz-Framwork|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1437879|我会拿石英来做这个。|1437880|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.oracle.com/javase/6/docs/api/java/util/concurrent/ScheduledExecutorService.html|1|http://www.quartz-scheduler.org/^0|A|O|0|18|F|1|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]|$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

Maybe you want to learn about Scheduling <a href="https://docs.oracle.com/javase/6/docs/api/java/util/concurrent/ScheduledExecutorService.html" rel="noreferrer">ScheduledExecutorService</a>
you can also take a look at the <a href="http://www.quartz-scheduler.org/" rel="noreferrer">Quartz-Framwork</a>

I would take quartz for this.

blocks|key|1438086|text|如果您当前在项目中使用spring，可以尝试使用带cron参数的@Scheduled批注|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1438087|@Scheduled(cron+=+"0+0+1+*+*+?")
public+void+doThing()+{
//...
}|code-block|syntax|javascript|1438088|请参阅https://spring.io/guides/gs/scheduling-tasks/|1438089|entityMap|0|LINK|mutability|MUTABLE|url|https://spring.io/guides/gs/scheduling-tasks/^0|W|A|0|0|3|19|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

If your are currently using spring in your project, you could try <code>@Scheduled</code> annotation with a cron param

<pre><code>@Scheduled(cron = "0 0 1 * * ?")
public void doThing() {
//...
}
</code></pre>

See <a href="https://spring.io/guides/gs/scheduling-tasks/" rel="nofollow noreferrer">https://spring.io/guides/gs/scheduling-tasks/</a>

blocks|key|1438100|text|Joda-Time项目现在位于maintenance-mode中。Joda-Time的创建者Stephen+Colebourne继续领导JSR310及其在java.time类中的实现。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1438101|设定你的极限。|1438102|LocalTime+ltStart+=+LocalTime.of(+9+,+0+)+;+
LocalTime+ltStop+=+LocalTime.of(+17+,+0+)+;+|code-block|syntax|javascript|1438103|获取你想要的时区的当前时刻。|1438104|ZoneId+z+=+ZoneOffset.UTC+;++//+Or+ZoneId.of(+"Africa/Casablanca"+)+or+such.
ZonedDateTime+now+=+ZonedDateTime.now(+z+)+;|1438105|比较一天的时间。|1438106|if(+now.toLocalTime().isBefore(+ltStart()+)+{
++++//+Wait+until+start
++++Duration+d+=+Duration.between(+now+,+now.with(+ltStart+)+)+;
++++//+Use+that+duration+to+schedule+task.+
}|1438107|查看当前时刻是否在工作时间内。|1438108|if(+(+!+now.toLocalTime().isBefore(+ltStart+)+&&+(+now.toLocalTime().isBefore(+ltStop+)+{+//+do+work+}|1438109|如果现在在停止时间之后，使用plusDays添加一天，调用with将tomorrow设置为上午9点，并计算等待时间的持续时间。|style|CODE|1438110|你想要下一个工作日。您可以使用DayOfWeek枚举自己编写跳过星期六和星期日的代码。但我建议将库(也由Stephen+Colebourne领导)添加到您的项目中。它提供了TemporalAdjuster的nextWorkingDay实现。|1438111|//+If+the+current+time+is+on+or+after+the+stop+time…
if(+!+now.toLocalTime().isBefore(+ltStop+)+)+{+
++++TemporalAdjuster+ta+=+org.threeten.extra.Temporals.nextWorkingDay()+;
++++ZonedDateTime+nextStart+=+now.with(+ltStart+).with(+ta+)+;
++++Duration+d+=+Duration.between(+now+,+nextStart+)+;
++++//+Use+duration+to+schedule+next+execution.
}|1438112|在对三种可能性(启动前、启动-停止期间和停止后)进行测试之后，我建议添加一个"else“作为防御性编程，以确保您的代码是正确的。|1438113|差分(+|1438114|+Thread.sleep)；|blockquote|1438115|1438116|1438117|让线程休眠是可行的，但这是一种相对粗糙的方式。|1438118|了解Java中的Executors框架，以简化任务调度工作。参见Oracle+Tutorial。和搜索堆栈溢出，因为这已经被多次报道过了。|1438119|entityMap|0|LINK|mutability|MUTABLE|url|https://www.joda.org/joda-time/|1|https://en.wikipedia.org/wiki/Maintenance_mode|2|https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/time/temporal/TemporalAdjuster.html|3|https://www.threeten.org/threeten-extra/apidocs/org.threeten.extra/org/threeten/extra/Temporals.html#nextWorkingDay()|4|https://docs.oracle.com/javase/tutorial/essential/concurrency/executors.html^0|0|9|0|F|G|1|0|0|0|0|0|0|0|0|0|E|8|T|4|0|F|9|2E|G|2V|E|2E|G|2|2V|E|3|0|0|0|0|0|0|0|0|W|F|4|0^^$0|@$1|2|3|4|5|6|7|1X|8|@]|9|@$A|1Y|B|1Z|1|20]|$A|21|B|22|1|23]]|C|$]]|$1|D|3|E|5|6|7|24|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|25|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|26|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|27|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|28|8|@]|9|@]|C|$]]|$1|Q|3|R|5|H|7|29|8|@]|9|@]|C|$I|J]]|$1|S|3|T|5|6|7|2A|8|@]|9|@]|C|$]]|$1|U|3|V|5|H|7|2B|8|@]|9|@]|C|$I|J]]|$1|W|3|X|5|6|7|2C|8|@$A|2D|B|2E|Y|Z]|$A|2F|B|2G|Y|Z]]|9|@]|C|$]]|$1|10|3|11|5|6|7|2H|8|@$A|2I|B|2J|Y|Z]|$A|2K|B|2L|Y|Z]|$A|2M|B|2N|Y|Z]]|9|@$A|2O|B|2P|1|2Q]|$A|2R|B|2S|1|2T]]|C|$]]|$1|12|3|13|5|H|7|2U|8|@]|9|@]|C|$I|J]]|$1|14|3|15|5|6|7|2V|8|@]|9|@]|C|$]]|$1|16|3|17|5|6|7|2W|8|@]|9|@]|C|$]]|$1|18|3|19|5|1A|7|2X|8|@]|9|@]|C|$]]|$1|1B|3|-4|5|6|7|2Y|8|@]|9|@]|C|$]]|$1|1C|3|-4|5|6|7|2Z|8|@]|9|@]|C|$]]|$1|1D|3|1E|5|6|7|30|8|@]|9|@]|C|$]]|$1|1F|3|1G|5|6|7|31|8|@]|9|@$A|32|B|33|1|34]]|C|$]]|$1|1H|3|-4|5|6|7|35|8|@]|9|@]|C|$]]]|1I|$1J|$5|1K|1L|1M|C|$1N|1O]]|1P|$5|1K|1L|1M|C|$1N|1Q]]|1R|$5|1K|1L|1M|C|$1N|1S]]|1T|$5|1K|1L|1M|C|$1N|1U]]|1V|$5|1K|1L|1M|C|$1N|1W]]]]

The <a href="https://www.joda.org/joda-time/" rel="nofollow noreferrer">Joda-Time</a> project is now in <a href="https://en.wikipedia.org/wiki/Maintenance_mode" rel="nofollow noreferrer">maintenance-mode</a>. The creator of Joda-Time, Stephen Colebourne, went on to lead JSR 310 and its implementation in the java.time classes.

Set your limits. 

<pre><code>LocalTime ltStart = LocalTime.of( 9 , 0 ) ; 
LocalTime ltStop = LocalTime.of( 17 , 0 ) ; 
</code></pre>

Get current moment as seen in your desired time zone. 

<pre><code>ZoneId z = ZoneOffset.UTC ; // Or ZoneId.of( "Africa/Casablanca" ) or such.
ZonedDateTime now = ZonedDateTime.now( z ) ;
</code></pre>

Compare the time-of-day. 

<pre><code>if( now.toLocalTime().isBefore( ltStart() ) {
 // Wait until start
 Duration d = Duration.between( now , now.with( ltStart ) ) ;
 // Use that duration to schedule task. 
}
</code></pre>

See if the current moment is within the work time. 

<pre><code>if( ( ! now.toLocalTime().isBefore( ltStart ) &amp;&amp; ( now.toLocalTime().isBefore( ltStop ) { // do work }
</code></pre>

If now is after the stop time, add a day with <code>plusDays</code>, call <code>with</code> to set tomorrow to 9 AM, and calculate duration for length of time to wait. 

You want the next working day. You could write the code yourself to skip Saturday and Sunday by using the <code>DayOfWeek</code> enum. But I suggest adding the <a href="https://www.threeten.org/threeten-extra/" rel="nofollow noreferrer">ThreeTen-Extra</a> library (also led by Stephen Colebourne) to your project. It offers the <a href="https://www.threeten.org/threeten-extra/apidocs/org.threeten.extra/org/threeten/extra/Temporals.html#nextWorkingDay()" rel="nofollow noreferrer"><code>nextWorkingDay</code></a> implementation of <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/time/temporal/TemporalAdjuster.html" rel="nofollow noreferrer"><code>TemporalAdjuster</code></a>. 

<pre><code>// If the current time is on or after the stop time…
if( ! now.toLocalTime().isBefore( ltStop ) ) { 
 TemporalAdjuster ta = org.threeten.extra.Temporals.nextWorkingDay() ;
 ZonedDateTime nextStart = now.with( ltStart ).with( ta ) ;
 Duration d = Duration.between( now , nextStart ) ;
 // Use duration to schedule next execution.
}
</code></pre>

After testing for your three possibilities (before start, within start-stop, and after stop), I recommend adding an "else" as defensive programming to make sure your code is correct.

<blockquote>
 Thread.sleep(difference);
</blockquote>

Sleeping a thread can work, but is a relatively crude way of doing this. 

Learn about the Executors framework in Java to make easy work of scheduling tasks. See <a href="https://docs.oracle.com/javase/tutorial/essential/concurrency/executors.html" rel="nofollow noreferrer">Oracle Tutorial</a>. And search Stack Overflow as this has been covered many times.

I have a requirement where I need to run the Java program only between 9AM and 5PM on weekdays. Timezone will be UTC always. The program should start exactly at 9AM and should end before 5PM. If it can't complete before 5PM then it should sleep till next day 08:59:59. If the next day is Weekend then it should start on Monday.

The article <a href="https://stackoverflow.com/questions/15134927/difference-in-seconds-between-two-dates-using-joda-time">difference in seconds between two dates using joda time?</a> explains how to get difference in seconds between two predefined dates but I always want to calculate difference between next working day 9AM and current time.

I'm thinking of using Thread.sleep() by calculating the time difference between two dates. Is there a Joda Time api which I can use to calculate the time difference between two dates?

I already tried getting the current epoch and epoch of next day 9AM if its weekday, calculating the difference between these two epochs and using that value for Thread.sleep but it's little bit messy.

Below is the pseudocode which I used

getNextDayEpoch function contains if/else code to decide if it's a weekday or weekend using <a href="https://stackoverflow.com/questions/40804890/determine-if-date-is-weekday-weekend-java">Determine if date is weekday/weekend java</a>

Based on whether its weekday or weekend, I get the corresponding epoch value. 

<pre class="lang-java prettyprint-override"><code>currentEpoch = getCurrentEpoch()
nextDayEpoch = getNextDayEpoch()

difference = nextDayEpoch - currentDayEpoch

try {
 Thread.sleep(difference);
} catch (InterruptedException e) {
 e.printStackTrace();
}

</code></pre>

Can you please suggest any better way to do it?

Execute java program between certain time duration

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个要求，我只需要在工作日的上午9点到下午5点之间运行Java程序。时区将始终为UTC。该节目应在上午9点整开始，下午5点前结束。如果它不能在下午5点之前完成，那么它应该睡眠到第二天08:59:59。如果下一天是周末，那么应该从周一开始。文章解释了如何获得两个预定义日期之间的秒数差，但我总是想计算下一个工作日上午9...

问在一定的时间间隔内执行java程序
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