如何获取当前日期和时间 [英] How to get the current date and time

问题描述

如何获取Java中的当前日期和时间?

How do I get the current date and time in Java?

我正在寻找与C#中的DateTime.Now等效的东西.

I am looking for something that is equivalent to DateTime.Now from C#.

推荐答案

只需构造一个没有任何参数的新Date对象；这会将当前日期和时间分配给新对象.

Just construct a new Date object without any arguments; this will assign the current date and time to the new object.

import java.util.Date;

Date d = new Date();

用 Javadocs的话来说用于零参数构造函数:

分配一个Date对象并初始化它，以便它表示分配它的时间，以最近的毫秒为单位.

Allocates a Date object and initializes it so that it represents the time at which it was allocated, measured to the nearest millisecond.

请确保您使用的是java.util.Date而不是java.sql.Date-后者没有零参数构造函数，并且语义完全不同，它们是完全不同的对话的主题. :)

Make sure you're using java.util.Date and not java.sql.Date -- the latter doesn't have a zero-arg constructor, and has somewhat different semantics that are the topic of an entirely different conversation. :)

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