Compile and Execute Scala Online

object HelloWorld {
    private def test1{
        println("from test1")
    }
    def main(args: Array[String]) {
      println("Hello, world!")
      val obj=new HelloWorld
      obj.x.foreach(println)
   }   
}

class HelloWorld{
    private var x=List(10,20,30)
    HelloWorld.test1

}