blocks|key|929895|text|特定的Date构造函数已弃用，应改用Calendar。Date的JavaDoc描述了哪些构造函数被弃用，以及如何使用Calendar替换它们。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|929896|entityMap|0|LINK|mutability|MUTABLE|url|http://download.oracle.com/javase/6/docs/api/java/util/Date.html^0|3|4|I|8|W|7|1M|8|R|4|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@$9|W|A|X|1|Y]]|E|$]]|$1|F|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

The specific <code>Date</code> constructor is deprecated, and <code>Calendar</code> should be used instead. 
The <code>JavaDoc</code> for <a href="http://download.oracle.com/javase/6/docs/api/java/util/Date.html" rel="noreferrer">Date</a> describes which constructors are deprecated and how to replace them using a <code>Calendar</code>.

blocks|key|714061|text|Date本身并未被弃用。只是它的很多方法都是。See+here+for+details。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|714062|请改用java.util.Calendar。|714063|entityMap|0|LINK|mutability|MUTABLE|url|http://download.oracle.com/javase/6/docs/api/java/util/Date.html|1|http://download.oracle.com/javase/6/docs/api/java/util/Calendar.html^0|0|4|N|K|0|0|3|I|3|I|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@$9|10|A|11|1|12]]|E|$]]|$1|H|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]]]

<code>Date</code> itself is not deprecated. It's just a lot of its methods are. <a href="http://download.oracle.com/javase/6/docs/api/java/util/Date.html" rel="noreferrer">See here for details</a>.

Use <a href="http://download.oracle.com/javase/6/docs/api/java/util/Calendar.html" rel="noreferrer"><code>java.util.Calendar</code></a> instead.

blocks|key|930037|text|java.util.Date类实际上并没有被弃用，只是构造器以及其他几个构造器/方法被弃用了。它被弃用了，因为这种用法在国际化中不能很好地工作。应该改用Calendar类：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|930038|Calendar+cal+=+Calendar.getInstance();
cal.set(Calendar.YEAR,+1988);
cal.set(Calendar.MONTH,+Calendar.JANUARY);
cal.set(Calendar.DAY_OF_MONTH,+1);
Date+dateRepresentation+=+cal.getTime();|code-block|syntax|javascript|930039|看看Javadoc的日期：|930040|http://download.oracle.com/javase/6/docs/api/java/util/Date.html|930041|entityMap|0|LINK|mutability|MUTABLE|url^0|0|E|24|8|0|0|0|0|1S|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|11|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|12|8|@]|D|@$9|13|A|14|1|15]]|E|$]]|$1|O|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|N]]]]

The <code>java.util.Date</code> class isn't actually deprecated, just that constructor, along with a couple other constructors/methods are deprecated. It was deprecated because that sort of usage doesn't work well with internationalization. The <code>Calendar</code> class should be used instead:

<pre><code>Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, 1988);
cal.set(Calendar.MONTH, Calendar.JANUARY);
cal.set(Calendar.DAY_OF_MONTH, 1);
Date dateRepresentation = cal.getTime();
</code></pre>

Take a look at the date Javadoc:

<a href="http://download.oracle.com/javase/6/docs/api/java/util/Date.html" rel="noreferrer">http://download.oracle.com/javase/6/docs/api/java/util/Date.html</a>

blocks|key|930070|text|与binnyb的建议类似，您可以考虑使用较新的Calendar+>+GregorianCalendar方法。请参阅以下更新的文档：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|930071|http://download.oracle.com/javase/6/docs/api/java/util/GregorianCalendar.html|offset|length|930072|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|25|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

Similar to what binnyb suggested, you might consider using the newer Calendar > GregorianCalendar method. See these more recent docs:

<a href="http://download.oracle.com/javase/6/docs/api/java/util/GregorianCalendar.html" rel="nofollow">http://download.oracle.com/javase/6/docs/api/java/util/GregorianCalendar.html</a>

blocks|key|930125|text|大多数Java开发人员目前使用的是第三方软件包Joda-Time。它被广泛认为是一种更好的实现。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|930126|然而，Java+8将有一个新的java.time.*+package。请参阅这篇文章Introducing+the+New+Date+and+Time+API+for+JDK+8。|930127|entityMap|0|LINK|mutability|MUTABLE|url|http://www.joda.org/joda-time/|1|https://en.wikipedia.org/wiki/Java_version_history#Java_SE_8|2|http://download.java.net/jdk8/docs/api/java/time/package-summary.html|3|https://dzone.com/articles/introducing-new-date-and-time^0|N|9|0|0|3|6|1|F|J|2|16|1B|3|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]|$A|11|B|12|1|13]|$A|14|B|15|1|16]]|C|$]]|$1|F|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]|P|$5|I|J|K|C|$L|Q]]|R|$5|I|J|K|C|$L|S]]]]

Most Java developers currently use the third party package <a href="http://www.joda.org/joda-time/" rel="nofollow noreferrer">Joda-Time</a>. It is widely regarded to be a much better implementation.
<a href="https://en.wikipedia.org/wiki/Java_version_history#Java_SE_8" rel="nofollow noreferrer">Java 8</a> however will have a new <a href="http://download.java.net/jdk8/docs/api/java/time/package-summary.html" rel="nofollow noreferrer">java.time.* package</a>. See this article, <a href="https://dzone.com/articles/introducing-new-date-and-time" rel="nofollow noreferrer">Introducing the New Date and Time API for JDK 8</a>.

blocks|key|714295|text|我遇到的这个问题是a+newer+question的一个副本，它询问在特定的年、月和日获得Date的非推荐方法是什么。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|714296|到目前为止，这里的答案是使用Calendar类，在Java8出现之前，这是正确的。但是从Java+8开始，实现这一点的标准方法是：|714297|LocalDate+localDate+=+LocalDate.of(1985,+1,+1);|code-block|syntax|javascript|714298|然后如果你真的需要一个java.util.Date，你可以使用this+question中的建议。|714299|有关更多信息，请查看用于Java8的the+API或the+tutorials。|714300|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/30494687/java-util-dateint-int-int-deprecated|1|https://stackoverflow.com/questions/33066904/localdate-to-java-util-date-and-vice-versa-simplest-conversion|2|http://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html|3|http://www.oracle.com/technetwork/articles/java/jf14-date-time-2125367.html^0|19|4|9|G|0|0|E|8|0|0|B|E|V|D|1|0|I|7|2|Q|D|3|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@$9|17|A|18|1|19]]|E|$]]|$1|F|3|G|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|1D|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1E|8|@$9|1F|A|1G|B|C]]|D|@$9|1H|A|1I|1|1J]]|E|$]]|$1|O|3|P|5|6|7|1K|8|@]|D|@$9|1L|A|1M|1|1N]|$9|1O|A|1P|1|1Q]]|E|$]]|$1|Q|3|-4|5|6|7|1R|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]|Y|$5|T|U|V|E|$W|Z]]|10|$5|T|U|V|E|$W|11]]|12|$5|T|U|V|E|$W|13]]]]

I came across this question as a duplicate of <a href="https://stackoverflow.com/questions/30494687/java-util-dateint-int-int-deprecated">a newer question</a> which asked what the non-deprecated way to get a <code>Date</code> at a specific year, month, and day was.

The answers here so far say to use the <code>Calendar</code> class, and that was true until Java 8 came out. But as of Java 8, the standard way to do this is:

<pre><code>LocalDate localDate = LocalDate.of(1985, 1, 1);
</code></pre>

And then if you really really need a <code>java.util.Date</code>, you can use the suggestions in <a href="https://stackoverflow.com/questions/33066904/localdate-to-java-util-date-and-vice-versa-simplest-conversion">this question</a>.

For more info, check out <a href="http://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html" rel="noreferrer">the API</a> or <a href="http://www.oracle.com/technetwork/articles/java/jf14-date-time-2125367.html" rel="noreferrer">the tutorials</a> for Java 8.

blocks|key|930219|text|通过使用Calendar类，您可以在代码中创建一个类似于new+Date(year,month,date)的方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|930220|private+Date+getDate(int+year,int+month,int+date){
++++Calendar+cal+=+Calendar.getInstance();
++++cal.set(Calendar.YEAR,+year);
++++cal.set(Calendar.MONTH,+month-1);
++++cal.set(Calendar.DAY_OF_MONTH,+day);
++++return+cal.getTime();
}|code-block|syntax|javascript|930221|它的工作方式就像Date的过时构造函数一样|930222|entityMap^0|4|8|S|P|0|0|8|4|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

You can make a method just like <code>new Date(year,month,date)</code> in your code by using <code>Calendar</code> class. 

<pre><code>private Date getDate(int year,int month,int date){
 Calendar cal = Calendar.getInstance();
 cal.set(Calendar.YEAR, year);
 cal.set(Calendar.MONTH, month-1);
 cal.set(Calendar.DAY_OF_MONTH, day);
 return cal.getTime();
}
</code></pre>

It will work just like the deprecated constructor of <code>Date</code>

blocks|key|930290|text|new+GregorianCalendar(1985,+Calendar.JANUARY,+1).getTime();|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|930291|(Java-8之前的方式)|unstyled|930292|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>new GregorianCalendar(1985, Calendar.JANUARY, 1).getTime();
</code></pre>

(the pre-Java-8 way)

blocks|key|714394|text|Date构造函数期望年的格式为自1900年以来的年份、从零开始的月份、从一开始的天，并将小时/分钟/秒/毫秒设置为零。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|714395|Date+result+=+new+Date(year,+month,+day);|code-block|syntax|javascript|714396|因此，使用Calendar替换(从零开始的年份，从零开始的月份，从1开始的日期)来代替过时的日期构造函数，我们需要类似这样的东西：|714397|Calendar+calendar+=+Calendar.getInstance();
calendar.clear();+//+Sets+hours/minutes/seconds/milliseconds+to+zero
calendar.set(year+%2B+1900,+month,+day);
Date+result+=+calendar.getTime();|714398|或者使用Java+1.8+(以零为基年，以一为基数的月和日)：|714399|Date+result+=+Date.from(LocalDate.of(year+%2B+1900,+month+%2B+1,+day).atStartOfDay(ZoneId.systemDefault()).toInstant());|714400|以下是Date、Calendar和Java+1.8的相同版本：|714401|int+year+=+1985;+//+1985
int+month+=+1;+//+January
int+day+=+1;+//+1st

//+Original,+1900-based+year,+zero-based+month,+one-based+day
Date+date1+=+new+Date(year+-+1900,+month+-+1,+day);

//+Calendar,+zero-based+year,+zero-based+month,+one-based+day
Calendar+calendar+=+Calendar.getInstance();
calendar.clear();+//+Sets+hours/minutes/seconds/milliseconds+to+zero
calendar.set(year,+month+-+1,+day);
Date+date2+=+calendar.getTime();

//+Java-time+back+to+Date,+zero-based+year,+one-based+month,+one-based+day
Date+date3+=+Date.from(LocalDate.of(year,+month,+day).atStartOfDay(ZoneId.systemDefault()).toInstant());

SimpleDateFormat+format+=+new+SimpleDateFormat("yyyy-MMM-dd+HH:mm:ss.SSS");

//+All+3+print+"1985-Jan-01+00:00:00.000"
System.out.println(format.format(date1));
System.out.println(format.format(date2));
System.out.println(format.format(date3));|714402|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

The Date constructor expects years in the format of years since 1900, zero-based months, one-based days, and sets hours/minutes/seconds/milliseconds to zero.

<pre><code>Date result = new Date(year, month, day);
</code></pre>

So using the Calendar replacement (zero-based years, zero-based months, one-based days) for the deprecated Date constructor, we need something like:

<pre><code>Calendar calendar = Calendar.getInstance();
calendar.clear(); // Sets hours/minutes/seconds/milliseconds to zero
calendar.set(year + 1900, month, day);
Date result = calendar.getTime();
</code></pre>

Or using Java 1.8 (which has zero-based year, and one-based months and days):

<pre><code>Date result = Date.from(LocalDate.of(year + 1900, month + 1, day).atStartOfDay(ZoneId.systemDefault()).toInstant());
</code></pre>

Here are equal versions of Date, Calendar, and Java 1.8:

<pre><code>int year = 1985; // 1985
int month = 1; // January
int day = 1; // 1st

// Original, 1900-based year, zero-based month, one-based day
Date date1 = new Date(year - 1900, month - 1, day);

// Calendar, zero-based year, zero-based month, one-based day
Calendar calendar = Calendar.getInstance();
calendar.clear(); // Sets hours/minutes/seconds/milliseconds to zero
calendar.set(year, month - 1, day);
Date date2 = calendar.getTime();

// Java-time back to Date, zero-based year, one-based month, one-based day
Date date3 = Date.from(LocalDate.of(year, month, day).atStartOfDay(ZoneId.systemDefault()).toInstant());

SimpleDateFormat format = new SimpleDateFormat("yyyy-MMM-dd HH:mm:ss.SSS");

// All 3 print "1985-Jan-01 00:00:00.000"
System.out.println(format.format(date1));
System.out.println(format.format(date2));
System.out.println(format.format(date3));
</code></pre>

blocks|key|714450|text|由于Date构造函数已弃用，您可以尝试此代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|714451|import+java.util.Calendar;

++Calendar+calendar+=+Calendar.getInstance();
+++++calendar.set(Calendar.HOUR_OF_DAY,+6);//+for+6+hour
+++++calendar.set(Calendar.MINUTE,+0);//+for+0+min
+++++calendar.set(Calendar.SECOND,+0);//+for+0+sec
+++++calendar.set(1996,0,26);//+for+Date+[year,month(0+to+11),+date]

++++Date+date+=+new+Date(calendar.getTimeInMillis());//+calendar+gives+long+value

++++String+mConvertedDate+=+date.toString();//+Fri+Jan+26+06:00:00+GMT%2B05:30+1996|code-block|syntax|javascript|714452|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|$]]

As the Date constructor is deprecated, you can try this code.

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

 Calendar calendar = Calendar.getInstance();
 calendar.set(Calendar.HOUR_OF_DAY, 6);// for 6 hour
 calendar.set(Calendar.MINUTE, 0);// for 0 min
 calendar.set(Calendar.SECOND, 0);// for 0 sec
 calendar.set(1996,0,26);// for Date [year,month(0 to 11), date]

 Date date = new Date(calendar.getTimeInMillis());// calendar gives long value

 String mConvertedDate = date.toString();// Fri Jan 26 06:00:00 GMT+05:30 1996
</code></pre>

I come from the C# world, so not too experienced with Java yet. I was just told by Eclipse that <code>Date</code> was deprecated:

<pre><code>Person p = new Person();
p.setDateOfBirth(new Date(1985, 1, 1));
</code></pre>

Why? And what (especially in cases like above) should be used instead?

Java: Why is the Date constructor deprecated, and what do I use instead?

Eclipse

Java

我来自Java界，所以对C#还没有太多经验。我刚被Eclipse告知Date被弃用了：Person p = new Person();p.setDateOfBirth(new Date(1985, 1, 1));为什么？应该使用什么(特别是在上面这样的情况下)？

问Java:为什么不推荐使用Date构造函数，我应该用什么来代替呢？
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问Java:为什么不推荐使用Date构造函数，我应该用什么来代替呢？
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