如何异步调用Java中的方法 [英] How to asynchronously call a method in Java

问题描述

我一直在看 Go的够程最近并认为这将是很好有类似的东西在Java中。虽然我已经搜查并行的方法调用常用的方法有多远做这样的事情：

I've been looking at Go's goroutines lately and thought it would be nice to have something similar in Java. As far as I've searched the common way to parallelize a method call is to do something like:

final String x = "somethingelse";
new Thread(new Runnable() {
           public void run() {
                x.matches("something"); 			
	}
}).start();

那不是很优雅。 是否有这样做的更好的办法？我需要在一个项目这样的解决方案，所以我决定实现围绕异步方法调用我自己的包装类。

Thats not very elegant. Is there a better way of doing this? I needed such a solution in a project so I decided to implement my own wrapper class around a async method call.

我 J-去出版了我的包装类。但我不知道这是否是一个很好的解决方案。用法很简单：

I published my wrapper class in J-Go. But I don't know if it is a good solution. The usage is simple:

SampleClass obj = ...
FutureResult<Integer> res = ...
Go go = new Go(obj);
go.callLater(res, "intReturningMethod", 10);         //10 is a Integer method parameter
//... Do something else
//...
System.out.println("Result: "+res.get());           //Blocks until intReturningMethod returns

或更简洁：

Go.with(obj).callLater("myRandomMethod");
//... Go away
if (Go.lastResult().isReady())                //Blocks until myRandomMethod has ended
    System.out.println("Method is finished!");

在内部，我使用实现Runnable的类，做一些反思工作，以获得正确的方法对象，并调用它。

Internally I'm using a class that implements Runnable and do some Reflection work to get the correct method object and invoking it.

我想了解我的小图书馆和使异步方法调用像这样在Java中的问题的一些意见。是否安全？有没有已经是simplier方式？

I want some opinion about my tiny library and on the subject of making async method calls like this in Java. Is it safe? Is there already a simplier way?

推荐答案

我刚刚发现，有做一个干净的方式你

I just discovered that there is a cleaner way to do your

new Thread(new Runnable() {
    public void run() {
        //Do whatever
    }
}).start();

（至少在Java中8），你可以使用lambda前pression把它缩短：

(At least in Java 8), you can use a lambda expression to shorten it to:

new Thread(() -> {
    //Do whatever
}).start();

就这么简单的JS制作功能！

As simple as making a function in JS!

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