javadatetimeint_Java中DateTime对象之间的小数天数

以毫克为单位减去时间并除以每天的毫秒数&＃xff1a;

double diff &＃61; (end.getMillis() - start.getMillis()) / 86400000d;

测试

DateTime start &＃61; new DateTime(2015, 1, 1, 0, 0, 0, 0); // Jan 1, 2015

DateTime end &＃61; new DateTime(2015, 7, 4, 14, 23, 55, 876); // Jul 4, 2015 at 2:23:55.876 PM

final int MILLIS_PER_DAY &＃61; 24 * 60 * 60 * 1000; // 86_400_000

double diff &＃61; (double)(end.getMillis() - start.getMillis()) / MILLIS_PER_DAY;

System.out.println(diff);

int days &＃61; (int)diff;

diff &＃61; (diff - days) * 24;

int hours &＃61; (int)diff;

diff &＃61; (diff - hours) * 60;

int minutes &＃61; (int)diff;

diff &＃61; (diff - minutes) * 60;

int seconds &＃61; (int)diff;

diff &＃61; (diff - seconds) * 1000;

int millis &＃61; (int)Math.round(diff);

System.out.println(days &＃43; " days, " &＃43;

hours &＃43; " hours, " &＃43;

minutes &＃43; " minutes, " &＃43;

seconds &＃43; " seconds, " &＃43;

millis &＃43; " millis");

产量

184.55828560185185

184 days, 13 hours, 23 minutes, 55 seconds, 876 millis

请注意&＃xff0c;由于夏令时&＃xff0c;它只有13个小时&＃xff0c;而不是14个小时 .