blocks|key|3066228|text|您可以按照java.util.Formatter中的说明使用String.format|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3066229|Calendar+c+=+...;
String+s+=+String.format("%25tY+year",+c);
//+->+s+==+"2010+year"+or+whatever+the+year+actually+is|code-block|syntax|javascript|3066230|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.oracle.com/javase/8/docs/api/java/util/Formatter.html^0|5|J|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]]]]

You can use String.format as documented in <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Formatter.html" rel="nofollow noreferrer">java.util.Formatter</a>:

<pre><code>Calendar c = ...;
String s = String.format("%tY year", c);
// -&gt; s == "2010 year" or whatever the year actually is
</code></pre>

blocks|key|318579|text|java.text.SimpleDateFormat|type|unstyled|depth|inlineStyleRanges|entityRanges|data|318580|SimpleDateFormat+formatter+=+new+SimpleDateFormat("yyyy/MM/dd");+
String+formattedDate+=+formatter.format(date);|code-block|syntax|javascript|318581|您将在此处获得更多信息link+text|offset|length|318582|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/j2se/1.4.2/docs/api/java/text/SimpleDateFormat.html^0|0|0|B|9|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]]]]

java.text.SimpleDateFormat

<pre><code>SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd"); 
String formattedDate = formatter.format(date);
</code></pre>

You'll get more info here <a href="http://java.sun.com/j2se/1.4.2/docs/api/java/text/SimpleDateFormat.html" rel="nofollow noreferrer">link text</a>

blocks|key|321512|text|当然，使用SimpleDateFormat可以包含文字字符串：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|321513|321514|在日期和时间模式字符串中，从'A‘到'Z’以及从'a‘到'z’的无引号字母被解释为表示日期或时间字符串组成部分的模式字母。文本可以用单引号(')引起来，以避免解释。"''“表示单引号。所有其他字符都不会被解释；它们只是在格式化过程中复制到输出字符串中，或者在解析过程中与输入字符串匹配。|blockquote|321515|321516|321517|+"hh+'o''clock'+a,+zzzz"++++12+o'clock+PM,+Pacific+Daylight+Time|code-block|syntax|javascript|321518|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/8/docs/api/java/text/SimpleDateFormat.html^0|5|G|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|-4|5|6|7|10|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|11|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|12|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|13|8|@]|9|@]|C|$]]|$1|J|3|K|5|L|7|14|8|@]|9|@]|C|$M|N]]|$1|O|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

Sure, with the <a href="http://docs.oracle.com/javase/8/docs/api/java/text/SimpleDateFormat.html" rel="noreferrer">SimpleDateFormat</a> you can include literal strings:

<blockquote>
 Within date and time pattern strings, unquoted letters from 'A' to 'Z' and from 'a' to 'z' are interpreted as pattern letters representing the components of a date or time string. Text can be quoted using single quotes (') to avoid interpretation. "''" represents a single quote. All other characters are not interpreted; they're simply copied into the output string during formatting or matched against the input string during parsing. 
</blockquote>

<pre><code> "hh 'o''clock' a, zzzz" 12 o'clock PM, Pacific Daylight Time
</code></pre>

blocks|key|318591|text|为了完整起见，Java8的DateTimeFormatter也支持这样：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|318592|DateTimeFormatter.ofPattern("yyyy+'year'");|code-block|syntax|javascript|318593|entityMap^0|D|H|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|$]]

Just for completeness, Java 8's <code>DateTimeFormatter</code> also supports this:

<pre><code>DateTimeFormatter.ofPattern("yyyy 'year'");
</code></pre>

blocks|key|321523|text|java.time|type|unstyled|depth|inlineStyleRanges|entityRanges|data|321524|已经是Mark+Jeronimus+said+it了。我正在更多地充实它。只需将要打印的文本直接放在单引号内即可。|offset|length|321525|++++DateTimeFormatter+yearFormatter+=+DateTimeFormatter.ofPattern("yyyy+'year'");
++++System.out.println(LocalDate.of(2010,+Month.FEBRUARY,+3).format(yearFormatter));
++++System.out.println(Year.of(2010).format(yearFormatter));
++++System.out.println(ZonedDateTime.now(ZoneId.of("Europe/Vilnius")).format(yearFormatter));|code-block|syntax|javascript|321526|刚才运行时的输出：|321527|321528|+2010年2010年2019年|blockquote|321529|321530|321531|如果您正在使用DateTimeFormatterBuilder及其appendPattern方法，请以相同的方式使用单引号。或者使用它的appendLiteral方法，并且没有单引号。|style|CODE|321532|那么，我们如何在格式中放入单引号呢？两个单引号产生一个。双单引号是否包含在单引号中并不重要：|321533|++++DateTimeFormatter+formatterWithSingleQuote+=+DateTimeFormatter.ofPattern("H+mm''+ss\"");
++++System.out.println(LocalTime.now(ZoneId.of("Europe/London")).format(formatterWithSingleQuote));|321534|321535|+10+28‘34“|321536|321537|321538|++++DateTimeFormatter+formatterWithSingleQuoteInsideSingleQuotes
++++++++++++=+DateTimeFormatter.ofPattern("hh+'o''clock'+a,+zzzz",+Locale.ENGLISH);
++++System.out.println(ZonedDateTime.now(ZoneId.of("America/Los_Angeles"))
++++++++++++.format(formatterWithSingleQuoteInsideSingleQuotes));|321539|321540|凌晨02点，太平洋夏令时|321541|321542|321543|上面所有的格式化程序也可以用于解析。例如：|321544|++++LocalTime+time+=+LocalTime.parse("16+43'+56\"",+formatterWithSingleQuote);
++++System.out.println(time);|321545|321546|+16:43:56|321547|321548|321549|近10年前提出这个问题时使用的SimpleDateFormat类是出了名的麻烦，而且早就过时了。我建议您改用java.time，这是现代的Java+date+and+time+API。这就是为什么我要演示这一点。|321550|链接|321551|解释如何使用java.time.|321552|Documentation+of+DateTimeFormatter|unordered-list-item|321553|
的|321554|Oracle+tutorial:+Date+Time|321555|321556|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/49667638/642706|1|https://docs.oracle.com/javase/10/docs/api/java/time/format/DateTimeFormatter.html|2|https://docs.oracle.com/javase/tutorial/datetime/^0|0|3|M|0|0|0|0|0|0|0|0|7|O|X|D|1W|D|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|F|G|0|0|0|H|H|0|Y|1|0|0|0|Q|2|0|0^^$0|@$1|2|3|4|5|6|7|2B|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|2C|8|@]|9|@$D|2D|E|2E|1|2F]]|A|$]]|$1|F|3|G|5|H|7|2G|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|2H|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|2I|8|@]|9|@]|A|$]]|$1|N|3|O|5|P|7|2J|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|2K|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|2L|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|2M|8|@$D|2N|E|2O|U|V]|$D|2P|E|2Q|U|V]|$D|2R|E|2S|U|V]]|9|@]|A|$]]|$1|W|3|X|5|6|7|2T|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|H|7|2U|8|@]|9|@]|A|$I|J]]|$1|10|3|-4|5|6|7|2V|8|@]|9|@]|A|$]]|$1|11|3|12|5|P|7|2W|8|@]|9|@]|A|$]]|$1|13|3|-4|5|6|7|2X|8|@]|9|@]|A|$]]|$1|14|3|-4|5|6|7|2Y|8|@]|9|@]|A|$]]|$1|15|3|16|5|H|7|2Z|8|@]|9|@]|A|$I|J]]|$1|17|3|-4|5|6|7|30|8|@]|9|@]|A|$]]|$1|18|3|19|5|P|7|31|8|@]|9|@]|A|$]]|$1|1A|3|-4|5|6|7|32|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|33|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|6|7|34|8|@]|9|@]|A|$]]|$1|1E|3|1F|5|H|7|35|8|@]|9|@]|A|$I|J]]|$1|1G|3|-4|5|6|7|36|8|@]|9|@]|A|$]]|$1|1H|3|1I|5|P|7|37|8|@]|9|@]|A|$]]|$1|1J|3|-4|5|6|7|38|8|@]|9|@]|A|$]]|$1|1K|3|-4|5|6|7|39|8|@]|9|@]|A|$]]|$1|1L|3|1M|5|6|7|3A|8|@$D|3B|E|3C|U|V]]|9|@]|A|$]]|$1|1N|3|1O|5|6|7|3D|8|@]|9|@]|A|$]]|$1|1P|3|1Q|5|6|7|3E|8|@]|9|@]|A|$]]|$1|1R|3|1S|5|1T|7|3F|8|@$D|3G|E|3H|U|V]]|9|@$D|3I|E|3J|1|3K]]|A|$]]|$1|1U|3|1V|5|6|7|3L|8|@]|9|@]|A|$]]|$1|1W|3|1X|5|1T|7|3M|8|@]|9|@$D|3N|E|3O|1|3P]]|A|$]]|$1|1Y|3|-4|5|6|7|3Q|8|@]|9|@]|A|$]]|$1|1Z|3|-4|5|6|7|3R|8|@]|9|@]|A|$]]]|20|$21|$5|22|23|24|A|$25|26]]|27|$5|22|23|24|A|$25|28]]|29|$5|22|23|24|A|$25|2A]]]]

<h2>java.time</h2>

<a href="https://stackoverflow.com/a/49667638/642706">Mark Jeronimus said it</a> already. I am fleshing it out a bit more. Just put the text to be printed literally inside single quotes.

<pre><code> DateTimeFormatter yearFormatter = DateTimeFormatter.ofPattern("yyyy 'year'");
 System.out.println(LocalDate.of(2010, Month.FEBRUARY, 3).format(yearFormatter));
 System.out.println(Year.of(2010).format(yearFormatter));
 System.out.println(ZonedDateTime.now(ZoneId.of("Europe/Vilnius")).format(yearFormatter));
</code></pre>

Output when running just now:

<blockquote>
<pre><code>2010 year
2010 year
2019 year
</code></pre>
</blockquote>

If you are using a <code>DateTimeFormatterBuilder</code> and its <code>appendPattern</code> method, use single quotes in the same way. Or use its <code>appendLiteral</code> method instead and no single quotes.

How do we put a single quote in the format, then? Two single quotes produce one. It doesn’t matter if the double single quote is inside single quotes or not:

<pre><code> DateTimeFormatter formatterWithSingleQuote = DateTimeFormatter.ofPattern("H mm'' ss\"");
 System.out.println(LocalTime.now(ZoneId.of("Europe/London")).format(formatterWithSingleQuote));
</code></pre>

<blockquote>
 10 28' 34"
</blockquote>

<pre><code> DateTimeFormatter formatterWithSingleQuoteInsideSingleQuotes
 = DateTimeFormatter.ofPattern("hh 'o''clock' a, zzzz", Locale.ENGLISH);
 System.out.println(ZonedDateTime.now(ZoneId.of("America/Los_Angeles"))
 .format(formatterWithSingleQuoteInsideSingleQuotes));
</code></pre>

<blockquote>
 02 o'clock AM, Pacific Daylight Time
</blockquote>

All of the formatters above can be used for parsing too. For example:

<pre><code> LocalTime time = LocalTime.parse("16 43' 56\"", formatterWithSingleQuote);
 System.out.println(time);
</code></pre>

<blockquote>
 16:43:56
</blockquote>

The <code>SimpleDateFormat</code> class used when this question was asked nearly 10 years ago is notoriously troublesome and long outdated. I recommend that instead you use java.time, the modern Java date and time API. Which is why I demonstrate just that.

<h2>Links</h2>

<ul>
<li><a href="https://docs.oracle.com/javase/tutorial/datetime/" rel="noreferrer">Oracle tutorial: Date Time</a> explaining how to use java.time.</li>
<li><a href="https://docs.oracle.com/javase/10/docs/api/java/time/format/DateTimeFormatter.html" rel="noreferrer">Documentation of <code>DateTimeFormatter</code></a></li>
</ul>

Is there an equivalent to php date() style formatting in Java? I mean, in php I can backslash-escape characters to have them treated literally. I.e. yyyy \y\e\a\r would become 2010 year. I did not find anything similar in Java, all examples deal only with built-in date formats. 

In particular, I deal with <a href="http://www.toedter.com/en/jcalendar/index.html" rel="noreferrer">JCalendar</a> date pickers and their dateFormatString property.

I need it because in my locale it is required to write all sorts of additional stuff in date format, like d. (for day) after days part, m. (for years) after years part and so on. At the worst case I could use string replace or regexp but maybe there's a simpler way? Thanks in advance!

Java date format - including additional characters

Java

在Java中有没有等同于php date()样式格式化的东西？我的意思是，在php中，我可以使用反斜杠-转义字符来逐字处理它们。即yyyy \y\e\a\r将成为2010年。我在Java中找不到类似的东西，所有的例子都只处理内置的日期格式。特别是，我要处理日期选择器及其dateFormatString属性。我之所以需要...

问Java日期格式-包括其他字符
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Java日期格式-包括其他字符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Java日期格式-包括其他字符
EN