如何减去日期？

from datetime import datetime

date1 = datetime(2022, 1, 1)
date2 = datetime(2021, 12, 31)

difference = date1 - date2
print(difference.days)

const date1 = new Date("2022-01-01");
const date2 = new Date("2021-12-31");

const difference = date1 - date2;
console.log(difference / (1000 * 60 * 60 * 24));

import java.time.LocalDate;

public class Main {
    public static void main(String[] args) {
        LocalDate date1 = LocalDate.of(2022, 1, 1);
        LocalDate date2 = LocalDate.of(2021, 12, 31);

        long difference = date1.toEpochDay() - date2.toEpochDay();
        System.out.println(difference);
    }
}