更改数组为字符串而无需创建一个字符串 [英] Change an array to a string without creating a string

问题描述

我要做到：

    String []beef = new String[3];
    beef[0] = "Water";
    beef[1] = "Chicken";
    beef[2] = "Paper";

    String empo = Arrays.toString(beef);

    if (empo.isEmpty()){
        empo = "Nothing";
        System.out.println(empo);
    }else{
        System.out.println(empo);
    }

而无需创建字符串。

without having to create the string.

结果
是这样的：

Something like:

    String []beef = new String[3];
    beef[0] = "Water";
    beef[1] = "Chicken";
    beef[2] = "Paper";

    Arrays.toString(beef);  //change beef to just a plain string

    if(beef.isEmpty()||beef==""){
    no = "Nothing";

    System.out.println(beef);

如何将一个去这样做呢？

How would one go about doing this?

推荐答案

Java是强烈并的 的静态类型语言。这意味着你必须告诉它的事情会是什么类型的，当你把它声明（强类型），而且你永远不能改变它是（静态类型）后类型。

You can't.

Java is a strongly and statically typed language. That means you have to tell it what type a thing will be when you declare it (strong typing), and you can't ever change it's type after that (static typing).

您只需要创建一个新的字符串。

You will just have to create a new String.

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