1.安装Scala
网址:http://www.scala-lang.org/download/
scala -version
3.安装带scala插件的eclipse
http://scala-ide.org/
Version 4.6.1
注意此版本需要JDK1.8
4.启动下载的eclipse,新建scala project如scalaDemo
5.默认包下建立scala object
6.创建main函数,打印输出hello world如图
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