Java Data Type - 如何计算两个日期之间的毫秒数

import static java.time.temporal.ChronoUnit.MILLIS;

import java.time.LocalDateTime;
public class Main {
  public static void main(String[] argv) {
    long millisBetween = MILLIS.between(LocalDateTime.now(), LocalDateTime.now().plusMinutes(1));
    System.out.println("millisBetween = " + millisBetween);
  }
}