title: Hello world doesn't run in IntelliJ Idea
body: <p>I have worked many years with Eclipse. After decided try IntelliJ Idea. Bua also simple java Hello World doesn't run! It is simply happens nothing. What should I check/adjust?
  Thanks.</p>
  
  <pre><code>package test; 
  /** * Created with IntelliJ IDEA. 
      * Date: 16/06/12 
      * Time: 12:13 
      * To change this template use File | Settings | File Templates. 
  */ 
  public class Main { 
      public static void main(String ...args)
         { System.out.println("Hello World"); } 
  }
  </code></pre>