如何将Java的日期字符串/对象转换为JFreeChart的Date格式? [英] How to convert Java's date strings/objects into JFreeChart's Date format?

问题描述

我正在使用JFreeChart库创建一个烛台图.我需要将时间值传递给OHLCSeries，但它只接受自己的时间值

I'm creating a candlestick chart using the JFreeChart library. I need to pass time values into OHLCSeries, but it only accepts its own time values

我将通过此类 https://www.jfree.org/jfreechart/api/javadoc/org/jfree/data/time/Hour.html

这个构造函数:Hour(int hour，int day，int month，int year)

And this constructor: Hour(int hour, int day, int month, int year)

我从API获得的数据最初看起来像这样:2021-03-02T16:00:00.000Z

The data which I get from the API originally looks like this: 2021-03-02T16:00:00.000Z

我的问题:如何将此日期字符串/Java时间格式转换为JFreeChart的Date格式?我只能考虑一些复杂的转换成Java类型+分别返回每个值，或使用正则表达式

My question: how to convert this date string/Java time formats into JFreeChart's Date format? I can only think about some complicated converting into Java types + returning each value separately, or using regexes

推荐答案

您可以 小时 .

You can parse the date-time string into Instant and then get java.util.Date object from this instant. Using this java.util.Date object, you can create an instance of Hour.

String strDateTime = "2021-03-02T16:00:00.000Z";
Instant instant = Instant.parse(strDateTime);
Hour hour = new Hour(Date.from(instant)));

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