如何在java中从jdatechooser中知道所选日期的星期几

import java.util.Calendar;

// 假设jdatechooser对象名为dateChooser
java.util.Date selectedDate = dateChooser.getDate();

Calendar calendar = Calendar.getInstance();
calendar.setTime(selectedDate);

int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);

String dayOfWeekName;
switch (dayOfWeek) {
    case Calendar.SUNDAY:
        dayOfWeekName = "星期日";
        break;
    case Calendar.MONDAY:
        dayOfWeekName = "星期一";
        break;
    case Calendar.TUESDAY:
        dayOfWeekName = "星期二";
        break;
    case Calendar.WEDNESDAY:
        dayOfWeekName = "星期三";
        break;
    case Calendar.THURSDAY:
        dayOfWeekName = "星期四";
        break;
    case Calendar.FRIDAY:
        dayOfWeekName = "星期五";
        break;
    case Calendar.SATURDAY:
        dayOfWeekName = "星期六";
        break;
    default:
        dayOfWeekName = "未知";
        break;
}

System.out.println("所选日期是：" + dayOfWeekName);