时间:下个星期五怎么去? [英] Time: How to get the next friday?

问题描述

如何使用 Joda-Time API 获得下一个星期五.

How can I get the next friday with the Joda-Time API.

LocalDate<今天的/a> 是 today.在我看来，您必须决定在本周星期五之前还是之后.看这个方法:

The LocalDate of today is today. It looks to me you have to decide whever you are before or after the friday of the current week. See this method:

private LocalDate calcNextFriday(LocalDate d) {
    LocalDate friday = d.dayOfWeek().setCopy(5);
    if (d.isBefore(friday)) {
        return d.dayOfWeek().setCopy(5);
    } else {
        return d.plusWeeks(1).dayOfWeek().setCopy(5);
    }
}

是否可以缩短或使用单线?

Is it possible to do it shorter or with a oneliner?

PS:请不要建议我使用 JDK 的日期/时间内容.Joda-Time 是一个更好的 API.

Java 8 引入了 java.time 包(教程)更好.

Java 8 introduces java.time package (Tutorial) which is even better.

推荐答案

java.time

使用 Java 内置的 java.time 框架8 及更高版本(教程)您可以使用 TemporalAdjusters 以获取 next 或 previous 星期几.

java.time

With the java.time framework built into Java 8 and later (Tutorial) you can use TemporalAdjusters to get next or previous day-of-week.

private LocalDate calcNextFriday(LocalDate d) {
  return d.with(TemporalAdjusters.next(DayOfWeek.FRIDAY));
}

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