blocks|key|715489|text|String.format("{0:dddd,+MMMM+d,+yyyy+hh:mm+tt}",+dt);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|715490|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>String.format("{0:dddd, MMMM d, yyyy hh:mm tt}", dt);
</code></pre>

blocks|key|715520|text|尝试以下单行解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|715521|import+java.util.Date;
String+timestamp+=+
++++new+java.text.SimpleDateFormat("MM/dd/yyyy+h:mm:ss+a").format(new+Date());|code-block|syntax|javascript|715522|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 single line solution :

<pre><code>import java.util.Date;
String timestamp = 
 new java.text.SimpleDateFormat("MM/dd/yyyy h:mm:ss a").format(new Date());
</code></pre>

blocks|key|715585|text|Joda-Time|type|unstyled|depth|inlineStyleRanges|entityRanges|data|715586|下面是相同类型的代码，但使用的是第三方库Joda-Time+2.3。|offset|length|715587|在现实生活中，我会指定一个time+zone，因为依赖默认区域通常是一种糟糕的做法。但为了示例的简单性，这里省略了。|715588|org.joda.time.DateTime+now+=+new+DateTime();
org.joda.time.format.DateTimeFormatter+formatter+=+DateTimeFormat.forPattern(+"MM/dd/yyyy+h:mm:ss+a"+);
String+nowAsString+=+formatter.print(+now+);

System.out.println(+"nowAsString:+"+%2B+nowAsString+);|code-block|syntax|javascript|715589|运行…时|715590|nowAsString:+11/28/2013+11:28:15+PM|715591|entityMap|0|LINK|mutability|MUTABLE|url|http://www.joda.org/joda-time/|1|http://www.joda.org/joda-time/apidocs/org/joda/time/DateTimeZone.html^0|0|K|9|0|0|D|9|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@$D|12|E|13|1|14]]|A|$]]|$1|F|3|G|5|6|7|15|8|@]|9|@$D|16|E|17|1|18]]|A|$]]|$1|H|3|I|5|J|7|19|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1A|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|1B|8|@]|9|@]|A|$K|L]]|$1|Q|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]]]

<h1>Joda-Time</h1>

Here is the same kind of code but using the third-party library <a href="http://www.joda.org/joda-time/" rel="nofollow">Joda-Time</a> 2.3. 

In real life, I would specify a <a href="http://www.joda.org/joda-time/apidocs/org/joda/time/DateTimeZone.html" rel="nofollow">time zone</a>, as relying on default zone is usually a bad practice. But omitted here for simplicity of example.

<pre class="lang-java prettyprint-override"><code>org.joda.time.DateTime now = new DateTime();
org.joda.time.format.DateTimeFormatter formatter = DateTimeFormat.forPattern( "MM/dd/yyyy h:mm:ss a" );
String nowAsString = formatter.print( now );

System.out.println( "nowAsString: " + nowAsString );
</code></pre>

When run…

<pre class="lang-none prettyprint-override"><code>nowAsString: 11/28/2013 11:28:15 PM
</code></pre>

blocks|key|715670|text|java.time|type|unstyled|depth|inlineStyleRanges|entityRanges|data|715671|从Java+8%2B开始，您可以使用java.time+package。具体地说，使用DateTimeFormatterBuilder和DateTimeFormatter格式化模式和文字。|offset|length|715672|DateTimeFormatter+formatter+=+new+DateTimeFormatterBuilder()
++++++++.appendPattern("MM").appendLiteral("/")
++++++++.appendPattern("dd").appendLiteral("/")
++++++++.appendPattern("yyyy").appendLiteral("+")
++++++++.appendPattern("hh").appendLiteral(":")
++++++++.appendPattern("mm").appendLiteral(":")
++++++++.appendPattern("ss").appendLiteral("+")
++++++++.appendPattern("a")
++++++++.toFormatter();
System.out.println(LocalDateTime.now().format(formatter));|code-block|syntax|javascript|715673|输出...|715674|06/22/2015+11:59:14+AM|715675|或者如果您想要不同的time+zone…|715676|//+system+default
System.out.println(formatter.withZone(ZoneId.systemDefault()).format(Instant.now()));
//+Chicago
System.out.println(formatter.withZone(ZoneId.of("America/Chicago")).format(Instant.now()));
//+Kathmandu
System.out.println(formatter.withZone(ZoneId.of("Asia/Kathmandu")).format(Instant.now()));|715677|715678|06/22/2015+12:38:42+PM
06/22/2015+02:08:42+AM
06/22/2015+12:53:42+PM|715679|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/8/docs/api/java/time/package-summary.html|1|https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatterBuilder.html|2|https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html|3|https://en.m.wikipedia.org/wiki/List_of_tz_database_time_zones^0|0|G|H|0|15|O|1|1U|H|2|0|0|0|0|A|9|3|0|0|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1A|8|@]|9|@$D|1B|E|1C|1|1D]|$D|1E|E|1F|1|1G]|$D|1H|E|1I|1|1J]]|A|$]]|$1|F|3|G|5|H|7|1K|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|1L|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|1M|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|1N|8|@]|9|@$D|1O|E|1P|1|1Q]]|A|$]]|$1|Q|3|R|5|H|7|1R|8|@]|9|@]|A|$I|J]]|$1|S|3|L|5|6|7|1S|8|@]|9|@]|A|$]]|$1|T|3|U|5|H|7|1T|8|@]|9|@]|A|$I|J]]|$1|V|3|-4|5|6|7|1U|8|@]|9|@]|A|$]]]|W|$X|$5|Y|Z|10|A|$11|12]]|13|$5|Y|Z|10|A|$11|14]]|15|$5|Y|Z|10|A|$11|16]]|17|$5|Y|Z|10|A|$11|18]]]]

<h1>java.time</h1>

As of Java 8+ you can use the <a href="http://docs.oracle.com/javase/8/docs/api/java/time/package-summary.html" rel="noreferrer">java.time package</a>. Specifically, use <a href="https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatterBuilder.html" rel="noreferrer">DateTimeFormatterBuilder</a> and <a href="https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html" rel="noreferrer">DateTimeFormatter</a> to format the patterns and literals.

<pre><code>DateTimeFormatter formatter = new DateTimeFormatterBuilder()
 .appendPattern("MM").appendLiteral("/")
 .appendPattern("dd").appendLiteral("/")
 .appendPattern("yyyy").appendLiteral(" ")
 .appendPattern("hh").appendLiteral(":")
 .appendPattern("mm").appendLiteral(":")
 .appendPattern("ss").appendLiteral(" ")
 .appendPattern("a")
 .toFormatter();
System.out.println(LocalDateTime.now().format(formatter));
</code></pre>

The output ...

<pre><code>06/22/2015 11:59:14 AM
</code></pre>

Or if you want different <a href="https://en.m.wikipedia.org/wiki/List_of_tz_database_time_zones" rel="noreferrer">time zone</a>…

<pre><code>// system default
System.out.println(formatter.withZone(ZoneId.systemDefault()).format(Instant.now()));
// Chicago
System.out.println(formatter.withZone(ZoneId.of("America/Chicago")).format(Instant.now()));
// Kathmandu
System.out.println(formatter.withZone(ZoneId.of("Asia/Kathmandu")).format(Instant.now()));
</code></pre>

The output ...

<pre><code>06/22/2015 12:38:42 PM
06/22/2015 02:08:42 AM
06/22/2015 12:53:42 PM
</code></pre>

blocks|key|715743|text|当我想要一枚邮票的时候我就是这样做的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|715744|++++String+timeStamp+=+new+SimpleDateFormat("yyyyMMddHHmmss").format(Calendar.getInstance().getTime());|code-block|syntax|javascript|715745|希望它能有所帮助:)作为一个新手，我认为这是不言而喻的|715746|我认为您还需要导入java.text.SimpleDateFormat；header才能工作：)|715747|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]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I did it like this when I wanted a tmiestamp

<pre><code> String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss").format(Calendar.getInstance().getTime());
</code></pre>

Hope it helps :) As a newbie I think it's self-explanatory

I think you also need import java.text.SimpleDateFormat; header for it to work :))

blocks|key|500246|text|您可以使用直接日期字符串格式的java.util.Date：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|500247|String+timeStamp+=+new+SimpleDateFormat("yyyy.MM.dd.HH.mm.ss").format(new+Date());|code-block|syntax|javascript|500248|entityMap^0|F|E|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|$]]

You can make use of <code>java.util.Date</code> with direct date string format:

<pre><code>String timeStamp = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss").format(new Date());
</code></pre>

I need to get the current timestamp in Java, with the format of <code>MM/DD/YYYY h:mm:ss AM/PM</code>, 

For example: <code>06/01/2000 10:01:50 AM</code>

I need it to be Threadsafe as well.

Can I utilize something like this?

<pre><code>java.util.Date date = new java.util.Date();
System.out.println(new Timestamp(date.getTime()));
</code></pre>

Or the examples discussed at the link <a href="http://www.devdaily.com/java/java-timestamp-example-current-time-now">here</a>.

Need to get current timestamp in Java

Java

我需要在Java中获取当前时间戳，格式为MM/DD/YYYY h:mm:ss AM/PM。例如：06/01/2000 10:01:50 AM我需要它也是线程安全的。我可以使用这样的东西吗？java.util.Date date = new java.util.Date();System.out.println(new ...

问需要在Java中获取当前时间戳
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

问需要在Java中获取当前时间戳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

问需要在Java中获取当前时间戳
EN