blocks|key|1564635|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564636|import+java.text.SimpleDateFormat;
import+java.util.Calendar;

public+class+currentTime+{

++++public+static+void+main(String[]+args)+{
++++++++Calendar+cal+=+Calendar.getInstance();
++++++++SimpleDateFormat+sdf+=+new+SimpleDateFormat("HH:mm:ss");
++++++++System.out.println(+sdf.format(cal.getTime())+);
++++}

}|code-block|syntax|javascript|1564637|您可以按自己喜欢的方式设置SimpleDateFormat的格式。有关任何其他信息，请查看java+api：|1564638|SimpleDateFormat|offset|length|1564639|Calendar|1564640|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/j2se/1.5.0/docs/api/java/text/SimpleDateFormat.html|1|http://java.sun.com/j2se/1.5.0/docs/api/java/util/Calendar.html^0|0|0|0|0|G|0|0|0|8|1|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|11|8|@]|9|@$K|12|L|13|1|14]]|A|$]]|$1|M|3|N|5|6|7|15|8|@]|9|@$K|16|L|17|1|18]]|A|$]]|$1|O|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]|W|$5|R|S|T|A|$U|X]]]]

Try this:

<pre><code>import java.text.SimpleDateFormat;
import java.util.Calendar;

public class currentTime {

 public static void main(String[] args) {
 Calendar cal = Calendar.getInstance();
 SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
 System.out.println( sdf.format(cal.getTime()) );
 }

}
</code></pre>

You can format SimpleDateFormat in the way you like. For any additional information you can look in java api:

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

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

blocks|key|1349060|text|两者都有|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349061|new+java.util.Date()|offset|length|style|CODE|1349062|和|1349063|System.currentTimeMillis()|1349064|将为您提供当前系统时间。|1349065|entityMap^0|0|0|K|0|0|0|Q|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@$D|R|E|S|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|T|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@$D|V|E|W|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|X|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|O|$]]

Both

<code>new java.util.Date()</code>

and

<code>System.currentTimeMillis()</code>

will give you current system time.

blocks|key|1564615|text|System.currentTimeMillis()|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564616|其他的一切都是以此为基础的。例如new+Date()调用System.currentTimeMillis()。|1564617|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

System.currentTimeMillis()

everything else works off that.. eg new Date() calls System.currentTimeMillis().

blocks|key|1349354|text|为了给更多的开发人员提供信息，并感谢Basil+Bourque，我只想在这个话题上加入我的石块。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349355|如果您想简单地获取HH:MM:SS格式，请执行以下操作：|1349356|LocalTime+hour+=+ZonedDateTime.now().toLocalTime().truncatedTo(ChronoUnit.SECONDS);|code-block|syntax|javascript|1349357|干杯。|1349358|附言:这至少只适用于Java+8！|1349359|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Just to inform for furthers developers, and thankfully to Basil Bourque, I just wanna add my stone to this topic.

If you want simply get the HH:MM:SS format then do this:

<pre><code>LocalTime hour = ZonedDateTime.now().toLocalTime().truncatedTo(ChronoUnit.SECONDS);
</code></pre>

Cheers.

P.S.: This will work only at least with Java 8 !

blocks|key|1564558|text|就像上面说的，你可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564559|Date+d+=+new+Date();|code-block|syntax|javascript|1564560|或使用|1564561|Calendar.getInstance();|1564562|或者如果你想要它在米利斯|1564563|System.currentTimeMillis()|1564564|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Like said above you can use 

<pre><code>Date d = new Date();
</code></pre>

or use

<pre><code>Calendar.getInstance();
</code></pre>

or if you want it in millis

<pre><code>System.currentTimeMillis()
</code></pre>

blocks|key|1564522|text|我不太清楚您的意思，但您可能只需要|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564523|Date+d+=+new+Date();|code-block|syntax|javascript|1564524|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|$]]

Not really sure about what you meant, but you probably just need

<pre><code>Date d = new Date();
</code></pre>

blocks|key|1349373|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349374|final+String+currentTime++++=+String.valueOf(System.currentTimeMillis());|code-block|syntax|javascript|1349375|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|$]]

try this:

<pre><code>final String currentTime = String.valueOf(System.currentTimeMillis());
</code></pre>

blocks|key|1564586|text|您可以使用new+Date+()，它将为您提供当前时间。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1564587|如果你需要用某种格式来表示它(通常你需要这样做)，那么就使用格式化程序。|1564588|DateFormat+df+=+DateFormat.getDateTimeInstance+(DateFormat.MEDIUM,+DateFormat.MEDIUM,+new+Locale+("en",+"EN"));
String+formattedDate+=+df.format+(new+Date+());|code-block|syntax|javascript|1564589|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can use new Date () and it'll give you current time.

If you need to represent it in some format (and usually you need to do it) then use formatters.

<pre><code>DateFormat df = DateFormat.getDateTimeInstance (DateFormat.MEDIUM, DateFormat.MEDIUM, new Locale ("en", "EN"));
String formattedDate = df.format (new Date ());
</code></pre>

blocks|key|1349239|text|我知道这是一个相当古老的问题。但希望澄清这一点：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349240|Date+d+=+new+Date()+|code-block|syntax|javascript|1349241|在当前版本的Java中已经降低了价格。推荐的方式是使用日历对象。例如：|1349242|Calendar+cal+=+Calendar.getInstance();
Date+currentTime+=+cal.getTime();|1349243|我希望这会对将来可能会提出这个问题的人有所帮助。谢谢你们所有人。|1349244|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|$]]

I understand this is quite an old question. But would like to clarify that:

<pre><code>Date d = new Date() 
</code></pre>

is depriciated in the current versions of Java. The recommended way is using a calendar object. For eg:

<pre><code>Calendar cal = Calendar.getInstance();
Date currentTime = cal.getTime();
</code></pre>

I hope this will help people who may refer this question in future. Thank you all.

blocks|key|1349269|text|尝试这个来获取当前的date.You也可以通过使用getters来获取当前的小时、分钟和秒：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1349270|new+Date(System.currentTimeMillis()).get....()|code-block|syntax|javascript|1349271|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|$]]

try this to get the current date.You can also get current hour, minutes and seconds by using getters :

<pre><code>new Date(System.currentTimeMillis()).get....()
</code></pre>

I am searching code in <code>java</code> for fetching or synchronizing my local PC system time into my application.

Java code for getting current time

Java

我正在java中搜索代码，以便将本地PC系统时间获取或同步到我的应用程序中。

问获取当前时间的Java代码
EN

回答 10

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问获取当前时间的Java代码EN

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