idea整合scala环境搭建和入门HelloWorld

左手的ㄟ右手 2022-03-29 12:58 216阅读 0赞

一：Scala开发环境的搭建

> 首先到Scala官网下载Scala网址为 [https://www.scala-lang.org/download/][https_www.scala-lang.org_download] 找到下图所示位置：选择相对应的版本的Scala进行下载，这里以window为例：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDY5MDU1_size_16_color_FFFFFF_t_70][]

下载完成后安装Scala，这里一路Next即可。   
\- Scala环境变量的配置   
如下图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDY5MDU1_size_16_color_FFFFFF_t_70 1][]

然后在使用CMD输入**scala -version**验证Scala安装是否成功，需要注意的是Scala需要依赖JDK环境，安装Scala前请确认是否安装了JDK的环境，(jdk1.8以上)

![20190108174905120.png][]

![20190108174950345.png][]

若有上述内容输出，则Scala安装成功，接下来使用idea完成Scala入门的helloWorld入门程序，首先使用idea的plugins下载Scala，若没有Scala插件这里输入进行Scala下载然后重启Idea即可   
这里本人已经安装了Scala,如下图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDY5MDU1_size_16_color_FFFFFF_t_70 2][]

选择new project->> 选择Scala如下图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDY5MDU1_size_16_color_FFFFFF_t_70 3][]

然后配置Scala编译环境如下图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDY5MDU1_size_16_color_FFFFFF_t_70 4][]

点击finsh，创建以下包如下图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDY5MDU1_size_16_color_FFFFFF_t_70 5][]

>     //主函数
>     def main(args: Array[String]): Unit = {
>       var greetStrings = new Array[String](3)
>       greetStrings(0) = "hello"
>       greetStrings(1) = ","
>       greetStrings(2) = "world"
>       for(i<- 0 to 2)
>         println(greetStrings(i))
>        println("hello world")
>       println(1>2)
>       printArgs(Array("1","2","3"))
>       println(gcdLoop(10,20))
>     }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDY5MDU1_size_16_color_FFFFFF_t_70 6][]

运行结果如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDY5MDU1_size_16_color_FFFFFF_t_70 7][]

[https_www.scala-lang.org_download]: https://www.scala-lang.org/download/
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[20190108174905120.png]: /images/20220329/b5e199ef1ad74ce2b6aa8c6f575237b3.png
[20190108174950345.png]: /images/20220329/2aaeee721f33433d92176710bf562017.png
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