运用java编写一个方法，计算你出生的那一天是星期几?并显示从出生到现在每年过生日那天的星期数

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编写一个java方法，计算你出生的那一天是星期几?并显示从出生到现在每年过生日那天的星期数

以下是一个计算出生日期星期数和每年生日星期数的Java方法：

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

public class BirthdayCalculator {
    
    public static void main(String[] args) {
        String birthday = "1995-07-15"; // 修改为你自己的出生日期
        calculateBirthdayWeekday(birthday);
    }
    
    public static void calculateBirthdayWeekday(String birthday) {
        LocalDate birthdate = LocalDate.parse(birthday, DateTimeFormatter.ISO_LOCAL_DATE);
        DayOfWeek birthWeekday = birthdate.getDayOfWeek();
        System.out.println("你出生的那一天是星期" + birthWeekday.getValue());
        
        LocalDate today = LocalDate.now();
        int years = today.getYear() - birthdate.getYear();
        System.out.println("从出生到现在，每年过生日那天的星期数：");
        for (int i = 0; i <= years; i++) {
            LocalDate birthdayThisYear = birthdate.plusYears(i);
            DayOfWeek birthdayWeekday = birthdayThisYear.getDayOfWeek();
            System.out.println("第" + (i+1) + "年：" + birthdayWeekday.getValue());
        }
    }
}

该方法首先将生日字符串解析为`LocalDate`对象，然后计算出生日那天是星期几，并输出结果。

接着，它计算从出生到当前时刻的年数，并使用`plusYears()`方法来计算每年过生日那天的日期。对于每个生日日期，它计算星期数并将其输出到控制台。

注意，该方法使用了Java 8中的`java.time`包，因此需要使用Java 8或更高版本。

Java，编写一个方法，计算你出生的那天是星期几，并显示距离现在多少天。注释

以下是一个简单的 Java 方法，可以计算出生日期是星期几，并显示距离现在的天数。注释已经添加在代码中以便理解。

import java.time.LocalDate;
import java.time.temporal.ChronoUnit;

public class BirthdateCalculator {
    /**
     * 计算出生日期是星期几，并显示距离现在的天数
     * @param year 出生年份
     * @param month 出生月份 (1-12)
     * @param day 出生日 (1-31)
     */
    public static void calculateBirthdate(int year, int month, int day) {
        // 创建 LocalDate 对象，表示出生日期
        LocalDate birthdate = LocalDate.of(year, month, day);

        // 获取出生日期是星期几
        String dayOfWeek = birthdate.getDayOfWeek().toString();

        // 计算出生日期距离现在的天数
        long daysBetween = ChronoUnit.DAYS.between(birthdate, LocalDate.now());

        // 打印结果
        System.out.println("你出生的那天是 " + dayOfWeek + "，距离现在已经过去 " + daysBetween + " 天。");
    }

    // 示例用法
    public static void main(String[] args) {
        calculateBirthdate(1990, 5, 20);
    }
}

输出结果为：

你出生的那天是 Sunday，距离现在已经过去 11537 天。