java - 使用 switch 语句的方法问题，返回不起作用

Question

代码如下:

    import java.util.*;

public class dayName {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println("Please enter the number to find out what day of the week it represents:");
        int number = in.nextInt();
        weekNumber(number);
    }

    public static String weekNumber(int number)
    {
        String dayNumber;
        switch (number)
        {
        case 1: dayNumber = "Monday"; break;
        case 2: dayNumber = "Tuesday"; break;
        case 3: dayNumber = "Wednesday"; break;
        case 4: dayNumber = "Thursday"; break;
        case 5: dayNumber = "Friday"; break;
        case 6: dayNumber = "Saturday"; break;
        case 7: dayNumber = "Sunday"; break;
        default: dayNumber = ""; break;
        }

        return dayNumber;
    }

}

我的问题是它编译得很好，但是当你问它这个数字时它没有返回任何东西，它应该根据你输入的数字返回日期字符串。

请记住我正在学习 Java。

Answer 1

weekNumber() 仅返回值，但您无需对其执行任何操作。

将该行更改为:

System.out.println(weekNumber(number));