如何在Java中找到两个日期之间的差值的持续时间？

尝试以下

{        Date dt2 = new DateAndTime().getCurrentDateTime();        long diff = dt2.getTime() - dt1.getTime();        long diffSeconds = diff / 1000 % 60;        long diffMinutes = diff / (60 * 1000) % 60;        long diffHours = diff / (60 * 60 * 1000);        int diffInDays = (int) ((dt2.getTime() - dt1.getTime()) / (1000 * 60 * 60 * 24));        if (diffInDays > 1) { System.err.println("Difference in number of days (2) : " + diffInDays); return false;        } else if (diffHours > 24) { System.err.println(">24"); return false;        } else if ((diffHours == 24) && (diffMinutes >= 1)) { System.err.println("minutes"); return false;        }        return true;}