Java 8传递方法作为参数 [英] Java 8 pass method as parameter

问题描述

目前进入Java 8 lambda表达式和方法引用。

Currently getting into Java 8 lambda expressions and method references.

我想传递一个没有args且没有返回值的方法作为另一个方法的参数。这就是我的做法：

I want to pass a method with no args and no return value as argument to another method. This is how I am doing it:

public void one() {
    System.out.println("one()");
}

public void pass() {
    run(this::one);
}

public void run(final Function function) {
    function.call();
}

@FunctionalInterface
interface Function {
    void call();
}

我知道 java.util.function 例如功能< T，R> 但我没有找到没有参数但没有产生结果的。

I know there is a set of predefined functional interfaces in java.util.function such as Function<T,R> but I didn't find one with no arguments and not producing a result.

推荐答案

真的没关系; Runnable 也会这样做。

It really does not matter; Runnable will do too.

Consumer<Void>,
Supplier<Void>,
Function<Void, Void>

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