blocks|key|4310445|text|mmFormat.format(today.getMonth())|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4310446|您正在将一个整数-日期的月份-传递给日期格式方法。|unstyled|4310447|format方法将该整数解释为UNIX时间戳-自1970年以来的秒数。|4310448|您需要将日期本身传递给格式化程序。|4310449|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|F|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>mmFormat.format(today.getMonth())
</code></pre>

You're passing an integer &ndash; the month of the date &ndash; to a date format method.

The format method interprets that integer as a UNIX timestamp &ndash; a number of seconds since 1970. 

You need to pass the date itself to the formatter.

blocks|key|4310401|text|将整个日期传递给SimpleDateFormat。格式字符串"MM“或"yyyy”将导致它只提取您想要的日期部分。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4310402|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Pass the entire date to SimpleDateFormat. The format string "MM" or "yyyy" will cause it to just extract the part of the date you want.

blocks|key|776332|text|只需使用Date+today作为输入参数|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|776333|System.out.println(mmFormat.format(today));|code-block|syntax|javascript|776334|和|776335|System.out.println(yyFormat.format(today));|776336|entityMap^0|4|4|9|5|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

Just use the <code>Date</code> <code>today</code> as the input argument

<pre><code>System.out.println(mmFormat.format(today));
</code></pre>

and

<pre><code>System.out.println(yyFormat.format(today));
</code></pre>

blocks|key|776401|text|today.getMonth()和today.getYear()返回一个被解释为UNIX时间戳的int。该值是1和113，它大致对应于此Date对象所表示的January+1,+1970,+00:00:01+GMT和January+1,+1970,+00:01:53+GMT。要获得想要的结果，您需要传递Date对象：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|776402|System.out.println(mmFormat.format(today));|code-block|syntax|javascript|776403|entityMap^0|0|G|H|F|1C|3|1J|1|1L|3|1W|4|26|T|30|T|48|4|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|L|$]]

<code>today.getMonth()</code> and <code>today.getYear()</code> returns an <code>int</code> which is interpreted as an UNIX timestamp . The value is <code>1</code> and <code>113</code> , which corresponds to approximately <code>January 1, 1970, 00:00:01 GMT</code> and <code>January 1, 1970, 00:01:53 GMT</code> represented by this <code>Date</code> object. To get the desired result , you need to pass the <code>Date</code> object :

<pre><code>System.out.println(mmFormat.format(today));
</code></pre>

blocks|key|1918015|text|您需要使用Calendar。看一看java+docs。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1918016|你可以这样做-|1918017|Calendar+cal+=+Calendar.getInstance();

System.out.println(cal.get(Calendar.DAY_OF_MONTH));
System.out.println(cal.get(Calendar.MONTH));+//+month+in+the+Calendar+class+begins+from+0
System.out.println(cal.get(Calendar.YEAR));
System.out.println(cal.get(Calendar.HOUR_OF_DAY));
System.out.println(cal.get(Calendar.MINUTE));
System.out.println(cal.get(Calendar.SECOND));|code-block|syntax|javascript|1918018|这将帮助您避免创建多个DateFormat对象。此外，如果您想使用另一个日期而不是今天的日期，您可以将date传递给cal.setTime()方法。|style|CODE|1918019|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Calendar.html^0|H|9|0|0|0|0|B|A|1F|4|1M|D|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|12|8|@$A|13|B|14|M|N]|$A|15|B|16|M|N]|$A|17|B|18|M|N]]|9|@]|C|$]]|$1|O|3|-4|5|6|7|19|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

You would need to use Calendar. Have a look at the <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Calendar.html" rel="nofollow">java docs</a>. 

You can do it like this -

<pre><code>Calendar cal = Calendar.getInstance();

System.out.println(cal.get(Calendar.DAY_OF_MONTH));
System.out.println(cal.get(Calendar.MONTH)); // month in the Calendar class begins from 0
System.out.println(cal.get(Calendar.YEAR));
System.out.println(cal.get(Calendar.HOUR_OF_DAY));
System.out.println(cal.get(Calendar.MINUTE));
System.out.println(cal.get(Calendar.SECOND));
</code></pre>

This would help you to avoid creating multiple <code>DateFormat</code> objects. Also in case you want to use another date instead of today's date the you can just pass the <code>date</code> to the <code>cal.setTime()</code> method.

blocks|key|4310616|text|这是因为所有这些方法都被弃用了。使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4310617|+Calendar+myCalendar+=+GregorianCalendar.getInstance();
+myCalendar.get(Calendar.MONTH);
+myCalendar.get(Calendar.YEAR);
+myCalendar.get(Calendar.DAY_OF_MONTH);|code-block|syntax|javascript|4310618|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|$]]

That is because all these methods are deprecated. Use 

<pre><code> Calendar myCalendar = GregorianCalendar.getInstance();
 myCalendar.get(Calendar.MONTH);
 myCalendar.get(Calendar.YEAR);
 myCalendar.get(Calendar.DAY_OF_MONTH);
</code></pre>

blocks|key|4310631|text|用这种方式更好|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4310632|++++Date+date=new+Date();+//+your+date
++++Calendar+cal+=+Calendar.getInstance();
++++cal.setTime(date);
++++int+year+=+cal.get(Calendar.YEAR);
++++int+month+=+cal.get(Calendar.MONTH);
++++int+day+=+cal.get(Calendar.DAY_OF_MONTH);
++++System.out.println(year%2B"\n"%2Bmonth);|code-block|syntax|javascript|4310633|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|$]]

Better in this way

<pre><code> Date date=new Date(); // your date
 Calendar cal = Calendar.getInstance();
 cal.setTime(date);
 int year = cal.get(Calendar.YEAR);
 int month = cal.get(Calendar.MONTH);
 int day = cal.get(Calendar.DAY_OF_MONTH);
 System.out.println(year+"\n"+month);
</code></pre>

I have <code>Date today=new Date();</code> which returns the current date.. but when i try to display date,month,year separately with the help of

<pre><code>DateFormat mmFormat=new SimpleDateFormat("MM"); 
System.out.println(mmFormat.format(today.getMonth()));
DateFormat yyFormat=new SimpleDateFormat("yyyy"); 
System.out.println(yyFormat.format(today.getYear()));
</code></pre>

it prints month as 01 and year as 1970

how to resolve this.?

Date Class error in java

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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我有返回当前日期的Date today=new Date();。但是，当我尝试使用DateFormat mmFormat=new SimpleDateFormat("MM"); System.out.println(mmFormat.format(today.getMonth()));DateFormat yyFormat=new SimpleDateFormat("yyyy"); System.

问java中的日期类错误
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