javaweb里面的一个需求看不懂，求热心人给个帮助

Question

这第8条是什么啊

Answer 1

给你写了个方法
public void test(String date) { // 这个date可以是数据库中的出生年月
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try {
Date nowdate = new Date();
Date d2 = df.parse(date);
long diff = nowdate.getTime() - d2.getTime();// 这样得到的差值是微秒级别
long days = diff / (1000 * 60 * 60 * 24);
long hours = (diff - days * (1000 * 60 * 60 * 24)) / (1000 * 60 * 60);
long minutes = (diff - days * (1000 * 60 * 60 * 24) - hours * (1000 * 60 * 60)) / (1000 * 60);
System.out.println("" + days + "天" + hours + "小时" + minutes + "分");
} catch (Exception e) {
}
}