問(wèn)題描述

我試圖在 Java 中獲取自 Epoch 以來(lái)的天數(shù)、周數(shù)、月數(shù).

I'm trying to get the number of days, weeks, months since Epoch in Java.

Java Calendar 類(lèi)提供了諸如 calendar.get(GregorianCalendar.DAY_OF_YEAR) 或 Calendar.get(GregorianCalendar.WEEK_OF_YEAR) 之類(lèi)的東西，這是一個(gè)好的開(kāi)始，但它并不能完全滿(mǎn)足我的需要.

The Java Calendar class offers things like calendar.get(GregorianCalendar.DAY_OF_YEAR), or Calendar.get(GregorianCalendar.WEEK_OF_YEAR), which is a good start but it doesn't do exactly what I need.

在 Java 中是否有一種優(yōu)雅的方法可以做到這一點(diǎn)?

Is there an elegant way to do this in Java?

推薦答案

你可以使用 Joda Timelibrary 很容易做到這一點(diǎn) - 除了使用標(biāo)準(zhǔn) Java Date 和 Calendar 類(lèi)之外，我將它用于與時(shí)間相關(guān)的任何事情.看看下面使用該庫(kù)的示例:

You can use the Joda Time library to do this pretty easily - I use it for anything time related other than using the standard Java Date and Calendar classes. Take a look at the example below using the library:

MutableDateTime epoch = new MutableDateTime();
epoch.setDate(0); //Set to Epoch time
DateTime now = new DateTime();

Days days = Days.daysBetween(epoch, now);
Weeks weeks = Weeks.weeksBetween(epoch, now);
Months months = Months.monthsBetween(epoch, now);

System.out.println("Days Since Epoch: " + days.getDays());
System.out.println("Weeks Since Epoch: " + weeks.getWeeks());
System.out.println("Months Since Epoch: " + months.getMonths());

當(dāng)我運(yùn)行它時(shí)，我得到以下輸出:

When I run this I get the following output:

Days Since Epoch: 15122
Weeks Since Epoch: 2160
Months Since Epoch: 496

這篇關(guān)于獲取自 Java 中的 Epoch 以來(lái)的天數(shù)、周數(shù)和月數(shù)的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！