\x0d\x0a*\x0d\x0a* @param dt\x0d\x0a* @return 当前日期是星期几\x0d\x0a*/\x0d\x0apublic static String getWeekOfDate(Date dt) {\x0d\x0aString[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"}\x0d\x0aCalendar cal = Calendar.getInstance()\x0d\x0acal.setTime(dt)\x0d\x0aint w = cal.get(Calendar.DAY_OF_WEEK) - 1\x0d\x0aif (w 回答于 2022-11-16
import java.text.ParseExceptionimport java.text.SimpleDateFormat
import java.util.Calendar
import java.util.Date
public class WeekDaysTest {
public static void main(String[] args) {
System.out.println(WeekDaysTest.dateToWeek("2022-01-01" ))
}
/**
* 日期转星期方法
* @param dateTime
* @return
*/
public static String dateToWeek(String dateTime){
SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd")
String[] weekDays = {"星期日","星期一","星期二","星期三","星期四","星期五","星期六"}
Calendar calendar = Calendar.getInstance()
// 获得一个日历
Date date = null
try
{
// 将String类型数据转换成Date类型
date = f.parse(dateTime)
calendar.setTime(date)
}
catch
(ParseException e) {
e.printStackTrace()
}
//指示一个星期中的某天
int w = calendar.get(Calendar.DAY_OF_WEEK) - 1
if(w w = 0
}
return weekDays[w]
}
}
public static void main(String[] args) {Calendar calendar = Calendar.getInstance()
int day = calendar.get(Calendar.DAY_OF_WEEK)
String displayName = calendar.getDisplayName(Calendar.DAY_OF_WEEK, Calendar.SHORT, Locale.getDefault())
System.out.println(day)
System.out.println(displayName)
}
可以通过calendar.get(Calendar.DAY_OF_WEEK)来获取今天在本周的索引值，从星期天开始，依次为1、2、3……到星期六为7。
或者通过本地化显示为当地的文字描述，通过calendar.getDisplayName(Calendar.DAY_OF_WEEK, Calendar.SHORT, Locale.getDefault())，你自己运行一下就知道结果了
