编写一个方法，计算你出生的那一天是星期几？并显示距离现在几天，用Scanner和

Calendar类实现。

可以参考以下代码：

import java.util.Calendar;
import java.util.Scanner;

public class Birthday {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入你的出生年份：");
        int year = scanner.nextInt();
        System.out.println("请输入你的出生月份：");
        int month = scanner.nextInt() - 1; // Calendar中月份从0开始
        System.out.println("请输入你的出生日期：");
        int day = scanner.nextInt();

        Calendar birthday = Calendar.getInstance();
        birthday.set(year, month, day);
        int dayOfWeek = birthday.get(Calendar.DAY_OF_WEEK);
        String[] daysOfWeek = {"", "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
        System.out.println("你的生日是：" + daysOfWeek[dayOfWeek]);

        Calendar now = Calendar.getInstance();
        long days = (now.getTimeInMillis() - birthday.getTimeInMillis()) / (24 * 60 * 60 * 1000);
        System.out.println("距离现在已经过去了 " + days + " 天。");
    }
}

运行程序后，按照提示输入出生年月日即可看到结果。