如何从午夜到秒获得时间 [英] How to get the time since midnight in seconds

问题描述

首先，这是一个我在Java 1课程中坚持的简单问题。这是一个静止的时间，我已经设置为8:49:12今天，我要弄清楚午夜过了多少秒，这到了午夜。 8小时49分12秒。
这是我现在的代码：

First off, this is a simple question that I'm stuck on in my Java 1 class. It's a static time that I set already as 8:49:12 "today" and I'm to figure out how many seconds past midnight and "to" midnight this represents. 8 hours, 49 minutes, and 12 seconds. Here is my code now:

hour    = 8;
minute  = 59;
second  = 32;
System.out.println("The static time used for this program was: " + hour + ":" + minute + ":" + second);

我的问题是我不知道如何从 >和自午夜。

My issue is that I have no clue on how to get the time from and since midnight.

所以基本上输出需要：

Number of seconds since midnight: 
Number of seconds to midnight:

后面的空格是秒。

谢谢，请解释原因，以及如何选择如何解决这个问题。我想学习：P

Thanks, and please explain why, and how you chose how to solve this. I want to learn :P

推荐答案

试试这个简单的数学：

System.out.println("Number of seconds since midnight:" +(second + (minute*60) + (hour*3600)));
System.out.println("Number of seconds to midnight:" +((60-second) + ((60-1-minute)*60) + (24-1-hour)*3600));

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