Java数组作为参数 [英] Java Arrays as Parameters

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本文介绍了Java数组作为参数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

你能传递一个新的数组作为一种方法,仍然有阵列中的数据?

Can you pass a new array as a method, and still have data in that array?

例如,我有这样的方法:美孚(字符串[]),我想这样称呼它富(新的String [ ] S = {字符串1,字符串2})。但是,这不是有效的Java。

For example, I have this method: foo(String[]), and i want to call it like thisfoo(new String[] s = {"String1", "String2"}). But that's not valid Java.

推荐答案

这是一个有效的Java方法(如,它编译和你想要做什么):

This is a "valid Java way" (as in, it compiles and does what you want):

foo(new String[] {"String1", "String2"});

如果您需要更改此方法的机会,那么你也可以考虑改变方法采取的可变参数参数:

If you have the opportunity to change this method, then you can also consider to change the method to take a varargs argument:

public void foo(String... strings) {
    // ...
}

然后就可以按如下方式使用它,而无需显式地创建一个数组:

Then you can use it as follows without the need to explicitly create an array:

foo("String1", "String2");

以下是那么也是有效的:

The following is then also valid:

foo("String1");

foo("String1", "String2", "String3");

,甚至更多。

这篇关于Java数组作为参数的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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