寻找日期差异

from datetime import date

date1 = date(2021, 1, 1)
date2 = date(2021, 12, 31)

difference = date2 - date1

print(difference)

const date1 = new Date(2021, 0, 1);
const date2 = new Date(2021, 11, 31);

const difference = date2 - date1;

console.log(difference);

import java.time.LocalDate;
import java.time.Period;

public class DateDifference {
    public static void main(String[] args) {
        LocalDate date1 = LocalDate.of(2021, 1, 1);
        LocalDate date2 = LocalDate.of(2021, 12, 31);

        Period difference = Period.between(date1, date2);

        System.out.println(difference);
    }
}