foo()和foo(void)之间的区别 [英] Difference between `foo()` and `foo(void)`

问题描述

在Java中，这两个函数声明之间有什么区别?

In Java, is there any difference between this two function declarations?

public void foo() {/*...*/}

public void foo(void) {/*...*/}

此处，您可以找到该问题的答案，但 C/C ++ 除外.在这些语言中，两种声明样式的存在是完全有意义的.

Here you can find the answear to this question but for C/C++. In these languages it makes totally sense the existance of both declaration styles.

但是 Java 的目的是什么?

推荐答案

后一种声明在Java中是非法的.您不能声明这样的方法.您应该会收到这样的错误:

The latter declaration illegal in Java. You can't declare a method like that. You should get an error like this:

Test.java:8: error: <identifier> expected
    public void foo(void) {/*...*/}
                        ^
1 error

因此，不仅没有意义-您根本找不到尝试使用此样式的有效代码.

So not only is there no point - you simply won't find valid code which attempts to use this style.

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