title: Where to put a Constants class that is accessible throughout my Grails app?
body: <p>I have a simple question but the google and stackoverflow results didn't satisfy me at all.</p>
  
  <p>How can I define a Constants class like:</p>
  
  <pre><code>public class Constants {
      public static final int SYSTEM_USER_ID = 1;
  }
  </code></pre>
  
  <p>that can be called <em>everywhere</em> with <strong><code>Constants.SYSTEM_USER_ID</code></strong></p>
  
  <p>I tried it in <code>grails-app/utils</code> and <code>src/java</code> but for example I couldn't access inside a Service class.</p>