Python pool.map/Multiprocessing 的 Java 等效项

问题描述

我想知道是否有人可以指出我在 java 中的一个简单等效的 python 多处理模块.

I was wondering if somebody could point me to a simple equivalent of python's multiprocessing module in java.

我有一个简单的并行处理场景(其中没有 2 个进程交互):获取一个数据集并将其拆分为 12 个并将 java 方法应用于 12 个数据集，收集结果并将它们加入某种列表中相同的顺序.

I have a simple parallel processing scenario (where no 2 processes interact): Take a data set and split it into 12 and apply a java method to the 12 datasets, collect results and join them in a list of some sort with the same ordering.

作为专业"语言的 Java 似乎有多个库和方法 - 谁能帮助这个 Java 新手入门?

Java being a "pro" language appears to have multiple libraries and methods - anyone who can help this java newbie get started?

我想用最少的代码来做这件事 - 正如我所说的，我的要求非常简单.

I would like to do this with minimal of coding - as i said my requirement is pretty straightforward.

更新:如何在 java 中进行多处理，以及预计速度会提高多少?

这似乎表明线程是要走的路.我希望我别无选择，只能涉入一堆船闸(双关语无意)并等待我的船航行.尽管如此，还是欢迎简单的例子.

This seems to indicate threads is the way to go. I expect I have no choice but wade into a bunch of locks (pun unintended) and wait for my ship to sail. Simple examples are welcome nevertheless.

推荐答案

没有完全兼容的类，但是 ExecutorService 为您提供实现它所需的一切.

There's no exactly-compatible class, but ExecutorService gives you everything you need to implement it.

特别是，没有将 Callable 映射到 Collection 并等待结果的函数，但您可以轻松构建 Collection<Callable<T>> 出 Callable<T> 和 Collection，然后只需调用 invokeAll，它会返回一个列表<未来<T>>.