使用Joda组合两个Date实例以创建日期时间 [英] Combining two Date instance to create date-time using Joda

问题描述

我有两个 java.util.Date 实例，其中包含日期值和时间值。现在，我想结合这些值来创建表示日期和时间的单个 java.util.Date 实例。

I have two java.util.Date instances which is contain date value and time value. now I want to combine these values to create single java.util.Date instance representing the date and time.

这里有一些例子来说明我想要什么：

here some example to make clear what I'd want :

      Date date = 2015-06-01;
      Date time = 22:30;

合并为：

     Date dateTime = 2015-06-01 22:30;

我做了一些搜索，发现了这个问题
组合java.util.Dates创建日期时间
与我当前的问题类似。但是不建议使用该问题的答案。

I do some search and I found this question Combining java.util.Dates to create a date-time which is similar with my current issue. But the chosen answer on that question is deprecated.

推荐答案

使用日历，您可以在没有JODA的情况下完成

You can do it without JODA, by using Calendar

但是，当您询问JODA时，可以在JODA中进行以下操作：

However, as you asked about JODA, here is the way to do in JODA:

// you want the date part from it
Date d = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss").parse("2013-01-02 03:04:05");

// you want to time part from it
Date t = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss").parse("2014-02-03 04:05:06");


LocalDate datePart = new LocalDate(d);
LocalTime timePart = new LocalTime(t);
LocalDateTime dateTime = datePart.toLocalDateTime(timePart);
Date result = dateTime.toDate();

// Or shrink the above 4 lines into one, as follow
// Date result = new LocalDate(d).toLocalDateTime(new LocalTime(t)).toDate();

System.out.println("result " + result);
// print out result Wed Jan 02 04:05:06 CST 2013

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