Java 从星期几中获取 Joda Time 的日期名称
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/20907809/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
From the day week number get the day name with Joda Time
提问by Odyssee
I have a day of the weeknumber: 2 (which should match to Tuesday if week start on Monday).
我有一个星期几：2（如果一周从星期一开始，它应该与星期二匹配）。
From this number is there a way to get the name of the day in Java using Joda Time? In javascript it has been quite easy to do it using moment.js:
从这个数字有没有办法使用 Joda Time 在 Java 中获取当天的名称？在 javascript 中，使用 moment.js 很容易做到：
moment().day(my number)
采纳答案by Meno Hochschild
Joda-Time
乔达时间
At least this works, although I consider it as not so nice:
至少这是有效的，尽管我认为它不太好：
LocalDate date = new LocalDate();
date = date.withDayOfWeek(2);
System.out.println(DateTimeFormat.forPattern("EEEE").print(date));
Unfortunately Joda-Timedoes not offer an enum for the day of week (java.time does). I have not quickly found another way in the huge api. Maybe some Joda-experts know a better solution.
不幸的是，Joda-Time不提供星期几的枚举（java.time 提供）。我还没有很快在巨大的api中找到另一种方法。也许一些 Joda 专家知道更好的解决方案。
Added (thanks to @BasilBourque):
添加（感谢@BasilBourque）：
LocalDate date = new LocalDate();
date = date.withDayOfWeek(2);
System.out.println(date.dayOfWeek().getAsText());
java.time
时间
In java.time(JSR 310, Java 8 and later), use the DayOfWeekenum.
在java.time（JSR 310、Java 8 及更高版本）中，使用enum。DayOfWeek
int day = 2;
System.out.println( DayOfWeek.of(2).getDisplayName(TextStyle.FULL, Locale.ENGLISH) );
// Output: Tuesday
You can use a particular enum instance directly rather than a magic numberlike 2. The DayOfWeekenum provides an instance for each day of week such as DayOfWeek.TUESDAY.
您可以使用特定的枚举实例，而不是直接一个神奇的数字一样2。该DayOfWeek枚举为一周的每一天如一个实例DayOfWeek.TUESDAY。
System.out.println( DayOfWeek.TUESDAY.getDisplayName(TextStyle.FULL, Locale.ENGLISH) );
// Output: Tuesday
Old JDK
旧版 JDK
For making it complete, here the solution of old JDK:
为了使它完整，这里是旧JDK的解决方案：
int day = 2;
DateFormatSymbols dfs = DateFormatSymbols.getInstance(Locale.ENGLISH);
System.out.println(dfs.getWeekdays()[day % 7 + 1]);
回答by jjurm
You can do it yourself
你可以自己做
String[] dayNames = new String[]{"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
String name = dayNames[day-1];
And this even does not require any library :)
这甚至不需要任何库:)
回答by M. Hig
Using Joda you can do this:
使用 Joda，您可以执行以下操作：
DateTime curTime = new DateTime();
curTime.dayOfWeek().getAsText(Locale.ENGLISH);
Replace Localewith whatever your Locale is.
替换Locale为您的语言环境。
Should return a week day name such as Monday or Tuesday
应该返回一个工作日名称，例如 Monday or Tuesday
