将小写的短工作日解析为Java8的时间DayOfWeek

import java.time.DayOfWeek;
import java.util.Locale;

public class DayOfWeekExample {
    public static void main(String[] args) {
        String shortDay = "mon"; // 假设这是输入的小写短工作日字符串

        // 将小写的短工作日字符串转换为DayOfWeek枚举
        DayOfWeek dayOfWeek = DayOfWeek.valueOf(shortDay.toUpperCase(Locale.ENGLISH));

        // 输出结果
        System.out.println("The day of the week is: " + dayOfWeek);
    }
}

import java.time.DayOfWeek;
import java.util.Locale;

public class DayOfWeekExample {
    public static void main(String[] args) {
        String shortDay = "abc"; // 假设这是输入的小写短工作日字符串

        // 验证输入字符串是否为有效的DayOfWeek枚举值
        DayOfWeek dayOfWeek = null;
        try {
            dayOfWeek = DayOfWeek.valueOf(shortDay.toUpperCase(Locale.ENGLISH));
        } catch (IllegalArgumentException e) {
            System.out.println("Invalid day of the week: " + shortDay);
        }

        // 如果dayOfWeek不为null，则输出结果
        if (dayOfWeek != null) {
            System.out.println("The day of the week is: " + dayOfWeek);
        }
    }
}