如何在 Java 中将日期设置为 JdateChooser？
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How to Set Date to JdateChooser in java?
提问by harsha
I used java Jcalender_1.4.jar I have date like this,
我使用了 java Jcalender_1.4.jar 我有这样的日期，
String date = "13 Oct 2016";
字符串日期 =“2016 年 10 月 13 日”；
i want this date set to JdateChooser text box, by using this command JdateChooser.setDate();
我希望这个日期设置为 JdateChooser 文本框，通过使用这个命令 JdateChooser.setDate();
how to covert string in to date format ?
如何将字符串转换为日期格式？
回答by Waruna Wijesundara
You can do it using this easily by SimpleDateFormat command
您可以通过 SimpleDateFormat 命令轻松使用它
String date = "13 Oct 2016";
java.util.Date date2 = new SimpleDateFormat("yyyy-MM-dd").parse(date);
JdateChooser.setDate(date2);
and also you can use any date format.
并且您还可以使用任何日期格式。
回答by Shinwar ismail
Calendar ca = new GregorianCalendar();
String day = ca.get(Calendar.DAY_OF_MONTH) + "";
String month = ca.get(Calendar.MONTH) + 1 + "";
String year = ca.get(Calendar.YEAR) + "";
if (day.length() == 1) {
day = "0" + day;
}
if (month.length() == 1) {
month = "0" + month;
}
String dd = year + "-" + month + "-" + day;
Date date = new SimpleDateFormat("yyyy-MM-dd").parse(dd);
jDateChooser1.setDate(date);
try this set date form computer date
试试这个设定的日期表格计算机日期
回答by Ole V.V.
The following was first written as an answer to this duplicate question. I thought it would be better to have it here so we have all the answers in one place.
以下内容最初是作为对这个重复问题的回答而编写的。我认为把它放在这里会更好，这样我们就可以在一个地方找到所有的答案。
The following should work overall, only the details depend on the format of the dates in the JTable(from the other question). I have assumed that from the JTableyou get a string like 03/07/2018(I am told that this format would be commonplace in Portugal). In this case the following formatter will be fine for parsing it. If the string is in a different format, the formatter will have to be different too.
以下应该整体工作，只有细节取决于JTable（来自另一个问题）中日期的格式。我假设从JTable你得到一个字符串03/07/2018（我被告知这种格式在葡萄牙很常见）。在这种情况下，以下格式化程序可以很好地解析它。如果字符串采用不同的格式，则格式化程序也必须不同。
DateTimeFormatter dtfFormatador = DateTimeFormatter
.ofLocalizedDate(FormatStyle.MEDIUM)
.withLocale(Locale.forLanguageTag("pt-PT"));
LocalDate data = LocalDate.parse(getData, dtfFormatador);
Instant instante = data.atStartOfDay(ZoneId.systemDefault()).toInstant();
Date dateAntiquado = Date.from(instante);
jdcSeletorDeDatas.setDate(dateAntiquado);
Unfortunately JDateChooser.setDate()requires an old-fashoined Dateobject, while we'd have preferred to avoid that outdated class. I am using a DateTimeFormatterfor parsing the string from the JTableinto a LocalDateand converting it to Date. LocalDateis the class from java.time, the modern Java date and time API, that we should use for a date without time of day.
不幸的是JDateChooser.setDate()需要一个过时的Date对象，而我们更愿意避免使用那个过时的类。我正在使用 aDateTimeFormatter将字符串从a解析JTable为 aLocalDate并将其转换为Date. LocalDate是来自java.time现代 Java 日期和时间 API 的类，我们应该将其用于没有时间的日期。
Edit:harsha, your string was
编辑：harsha，你的字符串是
String date = "13 Oct 2016";
To parse a string in this format, use the following formatter:
要解析此格式的字符串，请使用以下格式化程序：
DateTimeFormatter dateFormatter= DateTimeFormatter
.ofLocalizedDate(FormatStyle.MEDIUM)
.withLocale(Locale.US);
Otherwise use the code above, where jdcSeletorDeDatasis the JDateChooser.
否则，使用上面的代码，其中，jdcSeletorDeDatas是所述JDateChooser。
Link:Oracle tutorial: Date Timeexplaining how to use java.time.
链接：Oracle 教程：解释如何使用java.time.
回答by Shehan Deemantha
Try to cast the value to the Datetype. This Worked for me:
尝试将值转换为Date类型。这对我有用：
int SelectRow = jTable1.getSelectedRow();
jDateChooser1.setDate((Date) jTable1.getModel().getValueAt(SelectRow, 2));
