blocks|key|610703|text|我做这件事的方式和这里的每个人都不一样。我刚接触Java，所以我的解决方案可能很差。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|610704|Date+now+=+new+Date();
Date+midnightToday+=+new+Date(now.getYear(),+now.getMonth(),+now.getDate());|code-block|syntax|javascript|610705|我还不确定这是否有效，但无论哪种方式，我都希望得到关于这个解决方案的任何反馈。|610706|我被上面的语句搞糊涂了，你可以通过调用：|610707|c.add(Calendar.DAY_OF_MONTH,+1);|610708|如果您将一个月的第1天加上第31天，难道不是该月的第32天吗？|610709|为什么Java中的时间/日期不都基于UTC？我认为只有当与i/o一起使用时才需要时区，但在内部应该始终在UTC中使用。然而，这些类似乎包含了时区信息，这似乎不仅是浪费，而且容易出现编码错误。|610710|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|W|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I did this differently than everyone else here did. I'm new to Java, so maybe my solution is poor. 

<pre><code>Date now = new Date();
Date midnightToday = new Date(now.getYear(), now.getMonth(), now.getDate());
</code></pre>

I'm not sure this works yet, but either way, I'd appreciate any feedback on this solution. 

I'm confused by the statement above that you can calculate tomorrow by calling:

<pre><code>c.add(Calendar.DAY_OF_MONTH, 1);
</code></pre>

If you add 1 to the day of the month and it's the 31st day, don't you get the 32nd day of the month?

Why are times/dates not all based on UTC in Java? I would think Timezones should only be needed when used with i/o, but internally should always be used in UTC. However, the classes seem to include Timezone info which seems not only wasteful, but prone to coding errors.

blocks|key|825672|text|找到午夜的最简单方法是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|825673|Long+time+=+new+Date().getTime();
Date+date+=+new+Date(time+-+time+%25+(24+*+60+*+60+*+1000));|code-block|syntax|javascript|825674|第二天：|825675|Date+date+=+new+Date(date.getTime()+%2B+24+*+60+*+60+*+1000);|825676|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

The easiest way to find a midnight:

<pre><code>Long time = new Date().getTime();
Date date = new Date(time - time % (24 * 60 * 60 * 1000));
</code></pre>

Next day:

<pre><code>Date date = new Date(date.getTime() + 24 * 60 * 60 * 1000);
</code></pre>

blocks|key|825755|text|Apache+Commons+Lang|type|unstyled|depth|inlineStyleRanges|entityRanges|data|825756|DateUtils.isSameDay(date1,+date2)|code-block|syntax|javascript|825757|http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/time/DateUtils.html#isSameDay(java.util.Date|offset|length|825758|entityMap|0|LINK|mutability|MUTABLE|url|http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/time/DateUtils.html#isSameDay(java.util.Date),%2520java.util.Date^0|0|0|0|3N|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Apache Commons Lang

<pre><code>DateUtils.isSameDay(date1, date2)
</code></pre>

<a href="http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/time/DateUtils.html#isSameDay(java.util.Date" rel="nofollow">http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/time/DateUtils.html#isSameDay(java.util.Date</a>, java.util.Date)

blocks|key|610854|text|使用JodaTime的最简单方法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|610855|DateMidnight+date+=+DateMidnight.now();|offset|length|style|CODE|610856|entityMap^0|0|0|13|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

The simplest way with JodaTime 

<code>DateMidnight date = DateMidnight.now();</code>

blocks|key|825817|text|这似乎是一个选项：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|825818|DateFormat+justDay+=+new+SimpleDateFormat("yyyyMMdd");
Date+thisMorningMidnight+=+justDay.parse(justDay.format(new+Date()));|code-block|syntax|javascript|825819|为了给它增加一天，|825820|Date+tomorrow+=+new+Date(thisMorningMidnight.getTime()+%2B+24+*+60+*+60+*+1000);|825821|或|825822|Calendar+c+=+Calendar.getInstance();
c.setTime(thisMorningMidnight);
c.add(Calendar.DATE,+1);
Date+tomorrowFromCalendar+=+c.getTime();|825823|我有一种预感，如果出现像夏令时这样的奇怪情况，增加24小时是不够的(参见https://stackoverflow.com/a/4336131/32453和其他答案)，后者更可取。|offset|length|825824|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/4336131/32453^0|0|0|0|0|0|0|10|15|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|16|8|@]|9|@$Q|17|R|18|1|19]]|A|$]]|$1|S|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

This appears to be an option:

<pre><code>DateFormat justDay = new SimpleDateFormat("yyyyMMdd");
Date thisMorningMidnight = justDay.parse(justDay.format(new Date()));
</code></pre>

to add a day to it, either

<pre><code>Date tomorrow = new Date(thisMorningMidnight.getTime() + 24 * 60 * 60 * 1000);
</code></pre>

or

<pre><code>Calendar c = Calendar.getInstance();
c.setTime(thisMorningMidnight);
c.add(Calendar.DATE, 1);
Date tomorrowFromCalendar = c.getTime();
</code></pre>

I have a hunch the latter is preferred in case of something weird like daylight savings causing adding 24 hours to not be enough (see <a href="https://stackoverflow.com/a/4336131/32453">https://stackoverflow.com/a/4336131/32453</a> and its other answers).

blocks|key|825871|text|我知道这是一个非常古老的帖子。我想在这里分享我的知识！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|825872|对于今天午夜的日期和确切的时区，您可以使用以下命令|825873|public+static+Date+getCurrentDateWithMidnightTS(){

++++return+new+Date(System.currentTimeMillis()+-+(System.currentTimeMillis()%25(1000*60*60*24))+-+(1000*60+*+330));
}|code-block|syntax|javascript|825874|其中(1000*60+*+330)被减去，即实际上与时区有关，例如印度时区，即加尔各答与实际相差%2B5:30小时。所以用换算成毫秒减去。|offset|length|style|CODE|825875|因此，根据您的需要更改最后一个减去的数字。我正在创建一个产品，即只在印度，所以只使用了特定的时间戳。|825876|entityMap^0|0|0|0|2|F|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I know this is very old post. I thought to share my knowledge here ! 

For the date Mid night today with exact Time zone you can use following 

<pre><code>public static Date getCurrentDateWithMidnightTS(){

 return new Date(System.currentTimeMillis() - (System.currentTimeMillis()%(1000*60*60*24)) - (1000*60 * 330));
}
</code></pre>

Where <code>(1000*60 * 330)</code> is being subtracted i.e. actually related to time zone for example Indian time zone i.e. kolkata differs +5:30hrs from actual . So subtracting that with converting into milliseconds. 

So change last substracted number according to you. I m creating a product i.e. only based in India So just used specific timestamp.

blocks|key|611013|text|java.time|type|unstyled|depth|inlineStyleRanges|entityRanges|data|611014|如果您使用的是Java8或更高版本，可以尝试使用java.time+package+(Tutorial)：|offset|length|611015|LocalDate+tomorrow+=+LocalDate.now().plusDays(1);
Date+endDate+=+Date.from(tomorrow.atStartOfDay(ZoneId.systemDefault()).toInstant());|code-block|syntax|javascript|611016|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/8/docs/api/java/time/package-summary.html|1|http://docs.oracle.com/javase/tutorial/datetime/TOC.html^0|0|O|H|0|17|8|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]|$D|Z|E|10|1|11]]|A|$]]|$1|F|3|G|5|H|7|12|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]|S|$5|N|O|P|A|$Q|T]]]]

<h1>java.time</h1>

If you are using Java 8 and later, you can try the <a href="http://docs.oracle.com/javase/8/docs/api/java/time/package-summary.html" rel="noreferrer">java.time package</a> (<a href="http://docs.oracle.com/javase/tutorial/datetime/TOC.html" rel="noreferrer">Tutorial</a>):

<pre><code>LocalDate tomorrow = LocalDate.now().plusDays(1);
Date endDate = Date.from(tomorrow.atStartOfDay(ZoneId.systemDefault()).toInstant());
</code></pre>

blocks|key|825961|text|这些方法将帮助您-|type|unstyled|depth|inlineStyleRanges|entityRanges|data|825962|public+static+Date+getStartOfDay(Date+date)+{
+++++Calendar+calendar+=+Calendar.getInstance();
+++++calendar.setTime(date);
+++++calendar.set(Calendar.HOUR_OF_DAY,+0);
+++++calendar.set(Calendar.MINUTE,+0);
+++++calendar.set(Calendar.SECOND,+0);
+++++calendar.set(Calendar.MILLISECOND,+0);
+++++return+calendar.getTime();
+}|code-block|syntax|javascript|825963|和|825964|public+static+Date+getEndOfDay(Date+date)+{
++++Calendar+calendar+=+Calendar.getInstance();
++++calendar.setTime(date);
++++calendar.set(Calendar.HOUR_OF_DAY,+23);
++++calendar.set(Calendar.MINUTE,+59);
++++calendar.set(Calendar.SECOND,+59);
++++calendar.set(Calendar.MILLISECOND,+999);
++++return+calendar.getTime();
}|825965|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

these methods will help you-

<pre><code>public static Date getStartOfDay(Date date) {
 Calendar calendar = Calendar.getInstance();
 calendar.setTime(date);
 calendar.set(Calendar.HOUR_OF_DAY, 0);
 calendar.set(Calendar.MINUTE, 0);
 calendar.set(Calendar.SECOND, 0);
 calendar.set(Calendar.MILLISECOND, 0);
 return calendar.getTime();
 }
</code></pre>

and 

<pre><code>public static Date getEndOfDay(Date date) {
 Calendar calendar = Calendar.getInstance();
 calendar.setTime(date);
 calendar.set(Calendar.HOUR_OF_DAY, 23);
 calendar.set(Calendar.MINUTE, 59);
 calendar.set(Calendar.SECOND, 59);
 calendar.set(Calendar.MILLISECOND, 999);
 return calendar.getTime();
}
</code></pre>

blocks|key|826036|text|因为有一天是24+*+60+*+60+*+1000+ms，所以这一天的午夜可以计算为…|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|826037|long+now+=+System.currentTimeMillis();
long+delta+=+now+%25+24+*+60+*+60+*+1000;
long+midnight+=+now+-+delta;
Date+midnightDate+=+new+Date(midnight);`|code-block|syntax|javascript|826038|entityMap^0|6|J|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Because of one day is <code>24 * 60 * 60 * 1000</code> ms, 
the midnight of this day can be calculate as...

<pre><code>long now = System.currentTimeMillis();
long delta = now % 24 * 60 * 60 * 1000;
long midnight = now - delta;
Date midnightDate = new Date(midnight);`
</code></pre>

blocks|key|611212|text|Date+todayMidnightUTC+=+java.sql.Date.valueOf(LocalDate.now());
Date+tomorrowMidnightUTC+=+java.sql.Date.valueOf(LocalDate.now().plusDays(1));
Date+anyMidnightLocal+=+java.sql.Date.valueOf(LocalDate.from(dateTime.toInstant().atZone(ZoneId.systemDefault())));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|611213|但要注意，java.sql.Date.toInstant()总是抛出UnsupportedOperationException。|unstyled|offset|length|style|CODE|611214|通过LocalDate+to+java.util.Date+and+vice+versa+simpliest+conversion?|611215|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/33066904/localdate-to-java-util-date-and-vice-versa-simpliest-conversion/33066935#33066935^0|0|5|P|Y|T|0|2|1S|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|V|8|@$G|W|H|X|I|J]|$G|Y|H|Z|I|J]]|9|@]|A|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@$G|11|H|12|1|13]]|A|$]]|$1|M|3|-4|5|F|7|14|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

<pre><code>Date todayMidnightUTC = java.sql.Date.valueOf(LocalDate.now());
Date tomorrowMidnightUTC = java.sql.Date.valueOf(LocalDate.now().plusDays(1));
Date anyMidnightLocal = java.sql.Date.valueOf(LocalDate.from(dateTime.toInstant().atZone(ZoneId.systemDefault())));
</code></pre>

But beware that <code>java.sql.Date.toInstant()</code> always throws <code>UnsupportedOperationException</code>.

Via <a href="https://stackoverflow.com/questions/33066904/localdate-to-java-util-date-and-vice-versa-simpliest-conversion/33066935#33066935">LocalDate to java.util.Date and vice versa simpliest conversion?</a>

blocks|key|826117|text|和前面的答案差不多，但是没有人提到AM_PM参数：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|826118|++++Calendar+cal+=+Calendar.getInstance();
++++cal.set(Calendar.HOUR,+0);
++++cal.set(Calendar.MINUTE,+0);
++++cal.set(Calendar.SECOND,+0);
++++cal.set(Calendar.MILLISECOND,+0);
++++cal.set(Calendar.AM_PM,+Calendar.AM);|code-block|syntax|javascript|826119|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|$]]

Pretty much as the answers before, but nobody mentioned AM_PM parameter:

<pre><code> Calendar cal = Calendar.getInstance();
 cal.set(Calendar.HOUR, 0);
 cal.set(Calendar.MINUTE, 0);
 cal.set(Calendar.SECOND, 0);
 cal.set(Calendar.MILLISECOND, 0);
 cal.set(Calendar.AM_PM, Calendar.AM);
</code></pre>

blocks|key|826249|text|Date+now=+new+Date();
//+Today+midnight
Date+todayMidnight+=+new+Date(endTime.getTime()+-endTime.getTime()%25DateUtils.MILLIS_PER_DAY);

//+tomorrow+midnight
Date+tomorrowMidnight+=+new+Date(endTime.getTime()+-endTime.getTime()%25DateUtils.MILLIS_PER_DAY+%2B+DateUtils.MILLIS_PER_DAY);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|826250|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>Date now= new Date();
// Today midnight
Date todayMidnight = new Date(endTime.getTime() -endTime.getTime()%DateUtils.MILLIS_PER_DAY);

// tomorrow midnight
Date tomorrowMidnight = new Date(endTime.getTime() -endTime.getTime()%DateUtils.MILLIS_PER_DAY + DateUtils.MILLIS_PER_DAY);
</code></pre>

blocks|key|826365|text|老式的方式..|type|unstyled|depth|inlineStyleRanges|entityRanges|data|826366|private+static+Date+getDateWithMidnight(){
++++long+dateInMillis+=+new+Date().getTime();
++++return+new+Date(dateInMillis+-+dateInMillis%25(1000*60*60*24)+-+TimeZone.getDefault().getOffset(dateInMillis));
}|code-block|syntax|javascript|826367|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|$]]

Old fashioned way..

<pre><code>private static Date getDateWithMidnight(){
 long dateInMillis = new Date().getTime();
 return new Date(dateInMillis - dateInMillis%(1000*60*60*24) - TimeZone.getDefault().getOffset(dateInMillis));
}
</code></pre>

blocks|key|611544|text|使用apache+commons..|type|unstyled|depth|inlineStyleRanges|entityRanges|data|611545|//For+midnight+today+
Date+today+=+new+Date();+
DateUtils.truncate(today,+Calendar.DATE);

//For+midnight+tomorrow+++
Date+tomorrow+=+DateUtils.addDays(today,+1);+
DateUtils.truncate(tomorrow,+Calendar.DATE);|code-block|syntax|javascript|611546|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|$]]

Using apache commons..

<pre><code>//For midnight today 
Date today = new Date(); 
DateUtils.truncate(today, Calendar.DATE);

//For midnight tomorrow 
Date tomorrow = DateUtils.addDays(today, 1); 
DateUtils.truncate(tomorrow, Calendar.DATE);
</code></pre>

blocks|key|611602|text|JDK8+-+Java时间模块方式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|611603|LocalDateTime+todayMidnight+=+LocalDate.now().atStartOfDay();|offset|length|style|CODE|611604|此外，还可以：|611605|LocalDateTime+todayMidnight+=+LocalDateTime.now().with(LocalTime.MIDNIGHT);|611606|entityMap^0|0|0|1P|0|0|0|23|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@$D|P|E|Q|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@$D|T|E|U|F|G]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|M|$]]

JDK8 - Java Time Module way:
<code>LocalDateTime todayMidnight = LocalDate.now().atStartOfDay();</code>
Also work:
<code>LocalDateTime todayMidnight = LocalDateTime.now().with(LocalTime.MIDNIGHT);</code>

In my code I need to find all my things that happened today. So I need to compare against dates from today at 00:00 AM (midnight early this morning) to 12:00 PM (midnight tonight).
I know ...
<pre><code>Date today = new Date(); 
</code></pre>
... gets me right now. And ...
<pre><code>Date beginning = new Date(0);
</code></pre>
... gets me zero time on Jan 1, 1970. But what's an easy way to get zero time today and zero time tomorrow?
<hr />
<h2>UPDATE</h2>
I did this, but surely there's an easier way?
<pre><code>Calendar calStart = new GregorianCalendar();
calStart.setTime(new Date());
calStart.set(Calendar.HOUR_OF_DAY, 0);
calStart.set(Calendar.MINUTE, 0);
calStart.set(Calendar.SECOND, 0);
calStart.set(Calendar.MILLISECOND, 0);
Date midnightYesterday = calStart.getTime();
 
Calendar calEnd = new GregorianCalendar();
calEnd.setTime(new Date());
calEnd.set(Calendar.DAY_OF_YEAR, calEnd.get(Calendar.DAY_OF_YEAR)+1);
calEnd.set(Calendar.HOUR_OF_DAY, 0);
calEnd.set(Calendar.MINUTE, 0);
calEnd.set(Calendar.SECOND, 0);
calEnd.set(Calendar.MILLISECOND, 0);
Date midnightTonight = calEnd.getTime();
</code></pre>

How to create a Java Date object of midnight today and midnight tomorrow?

Java

在我的代码中，我需要找到今天发生的所有事情。因此，我需要比较从今天凌晨00:00 (今天凌晨)到下午12:00 (今晚午夜)的日期。我知道..。Date today = new Date(); ..。我现在就明白了。还有..。Date beginning = new Date(0);..。在1970年1月1日给我的时间...

问如何创建今天午夜和明天午夜的Java Date对象？
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问如何创建今天午夜和明天午夜的Java Date对象？
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