java - SWT DateTime - 从两个小部件读取日期和时间

Question

想象两个小部件:

DateTime dtDate = new DateTime(parent, SWT.BORDER);

和

DateTime dtTime = new DateTime(parent, SWT.BORDER | SWT.TIME);

将两个小部件中的日期和时间读取到单个日期变量中是否是最有效的方法？

编辑:我想到的以下解决方案远非优雅。我希望有更好的方法来做到这一点。

final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// year
dateString += String.valueOf(dtDate .getYear());
dateString += "-";
// month
dateString += String.valueOf(dtDate .getMonth());
dateString += "-";

// day
dateString += String.valueOf(dtDate .getDay());
dateString += " ";

// hour
dateString += String.valueOf(dtTime.getHours());
dateString += ":";

// minute
dateString += String.valueOf(dtTime.getMinutes());
dateString += ":";

// second
dateString += String.valueOf(dtTime.getSeconds());

try {
    Date startDate = (Date) dateFormat.parse(dateString);
    } catch (ParseException exception) {
    exception.printStackTrace();
    }

Answer 1

对于 Java 8 及更高版本，您可以使用 LocalDateTime:

LocalDateTime dateTime = 
   LocalDateTime.of(dtDate.getYear(), dtDate.getMonth() + 1, dtDate.getDay(), dtTime.getHours(), dtTime.getMinutes(), dtTime.getSeconds());

JFace 数据绑定(bind)使用 Calendar:

Calendar cal = Calendar.getInstance();
cal.clear();

cal.set(Calendar.YEAR, dtDate.getYear());
cal.set(Calendar.MONTH, dtDate.getMonth());
cal.set(Calendar.DAY_OF_MONTH, dtDate.getDay());

cal.set(Calendar.HOUR_OF_DAY, dtTime.getHours());
cal.set(Calendar.MINUTE, dtTime.getMinutes());
cal.set(Calendar.SECOND, dtTime.getSeconds());

Date date = cal.getTime();