从Java的公历确定每月的星期几
要使用GregorianCalendar类，请导入以下包-
import java.util.GregorianCalendar;
要获取每月的星期几，请使用以下字段-
cal.get(Calendar.DAY_OF_WEEK_IN_MONTH)
上面的cal是我们在之前创建的GregorianCalendar对象-
GregorianCalendar cal = new GregorianCalendar();
以下是一个例子-
示例
import java.util.GregorianCalendar;
import java.util.Calendar;
import java.util.Date;
public class Demo {
public static void main(String[] args) {
GregorianCalendar cal = new GregorianCalendar();
//日期信息
System.out.println("Date Information..........");
System.out.println("Year = " + cal.get(Calendar.YEAR));
System.out.println("Month = " + (cal.get(Calendar.MONTH) + 1));
System.out.println("Date = " + cal.get(Calendar.DATE));
//周
System.out.println("Day of周 in month = " + cal.get(Calendar.DAY_OF_WEEK_IN_MONTH));
}
}输出结果
Date Information.......... Year = 2018 Month = 11 Date = 19 Day of周 in month = 3
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