title: how can I set the controller in the scene builder?
body: <p>I want to use <code>sceneBuilder</code> for a <code>javaFx</code> application. I have a <code>Package</code> that is called <code>testPac</code> and inside that I have the folders as has been presented in figure 1;</p>
  
  <p><a href="https://i.stack.imgur.com/6gF0D.png" rel="noreferrer"><img src="https://i.stack.imgur.com/6gF0D.png" alt="figure 1"></a></p>
  
  <p>I have one <code>fxml</code> file and its <code>controller</code> inside the <code>view</code> folder.
  now, I don't know what I must use inside the controller box in <code>sceneBuilder</code>. 
  the content of <code>view</code> folder according to figure 2.</p>
  
  <p><a href="https://i.stack.imgur.com/UHuc4.png" rel="noreferrer"><img src="https://i.stack.imgur.com/UHuc4.png" alt="figure 2"></a></p>