java - 根据输入日期检索星期几

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any1 能告诉我我的代码有什么问题吗？我得到了不正确的输出。干杯

public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    String[] days={"SUNDAY", "MONDAY", "TUESDAY", "WEDNESDAY", "THURSDAY", "FRIDAY", "SATURDAY"};
    int month = in.nextInt();
    int day = in.nextInt();
    int year = in.nextInt();
    Calendar c = Calendar.getInstance();
    c.set(Calendar.YEAR,  year);
    c.set(Calendar.MONTH,  month);
    c.set(Calendar.DAY_OF_MONTH,  day);
    int day_of_week = c.get(Calendar.DAY_OF_WEEK)-1;
    System.out.println(days[day_of_week]);
}

Answer 1

阅读文档，然后更改为

c.set(Calendar.MONTH,  month -1);

因为它接受从零开始的索引