JAVA 两个时间 相差的 小时，天数，分钟

long nd = 1000 * 24 * 60 * 60; //每天毫秒数
long nh = 1000 * 60 * 60; //每小时毫秒数
long nm = 1000 * 60; //每分钟毫秒数

long diff = DateTime.now().getTime() - yourTime.getTime();//获取两个时间差毫秒数
Long day = diff / nd; 相差的天数
Long hour = diff / nh; 相差的小时
Long minutes = diff / nm; 相差的分钟