计算2023-1-1 这一天是星期几？

package hhh2;

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.Month;
import java.time.format.TextStyle;
import java.util.Locale;

public class LocalDate1 {
    public static void main(String[] args) {
        var now = LocalDate.now();// 当前的日期
        System.out.println(now);
        System.out.printf("%tF", now);/* 格式化当前的日期，因为输出的结果和上一行是一样的，
        所以var now = LocalDate.now();本身就已经格式化了
 */
        System.out.println();
        var a = LocalDate.of(2023, 1, 1);
        System.out.println(a);
        DayOfWeek dayOfWeek = a.getDayOfWeek();
        System.out.println(dayOfWeek.getDisplayName(TextStyle.FULL, Locale.CHINESE));// 输出星期几
        System.out.println(dayOfWeek.getDisplayName(TextStyle.SHORT, Locale.CHINESE));// 中国
        System.exit(0);
    }
}