title: Stuck at "Hello World" with IntelliJ IDEA 9.0.1 for Scala
body: <p>I've been using Eclipse since 2.x and IDEs in general for over 20 years (since Turbo Pascal and Turbo C in the late '80s!).</p>
  
  <p>(that preamble is supposed to imply, "I'm not an idiot" ... but doesn't sound so smart as I read it... LOL :-] )</p>
  
  <p>Now I'm trying to use the Scala debugger in IntelliJ 9.0.1. I've resigned myself to an old standby, the "hello world" trick to check if the environment is setup correctly:</p>
  
  <pre>
  class hello {
    def main(a: Array[String]) = println("got args: " + a)
  }
  </pre>
  
  <p>I also tried this version, just in case:</p>
  
  <pre>
  object hello extends Application {
      println("hi")
  }
  </pre>
  
  <p>Alas, I'm unable to get even this simple Scala example to run. I'd like to eventually put a breakpoint in it, but for now just running it would be great. I have Java 1.6u20 and the Scala plug-in 0.3.473 (January 2010). The error below summarizes my experience:</p>
  
  <p><a href="https://i.stack.imgur.com/5cTCF.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5cTCF.jpg" alt="alt text"></a>
  </p>
  
  <p>What possibly could I be doing wrong?</p>
  
  <p>Thanks</p>