Scala入门

搭建环境请参考：

http://www.cnblogs.com/super-d2/p/4534208.html

1.交互式编程：

adeMacBook-Pro:ssdb-master apple$ scala
Welcome to Scala version  (Java HotSpot(TM) -Bit Server VM, Java 1.7.0_71).
Type in expressions to have them evaluated.
Type :help for more information.

scala> object HelloWorld {
     | def main(args:Array[String]){
     |   println("Hello world!")
     | }
     | }
defined object HelloWorld

scala> HelloWorld.main(null)
Hello world!

scala> :q

2.编译并运行：

adeMacBook-Pro:scala_dev apple$ vim HelloWorld.scala

HelloWorld.scala

object HelloWorld {
  def main(args: Array[String]) {
    println("Hello, world!")
  }
}

编译：

scalac HelloWorld.scala

运行：

adeMacBook-Pro:scala_dev apple$ scala HelloWorld
Hello, world!

3.导入java的类

import java.util.{Date, Locale}
import java.text.DateFormat
import java.text.DateFormat._
object FrenchDate {
      def main(args: Array[String]) {
              val now = new Date
              val df = getDateInstance(LONG, Locale.FRANCE)
              println(df format now)
      }
}

参考网站：

http://scalachina.com/node/17