title: How do I get all nodes in a parent in JavaFX?
body: <p>In C# I found a method that was pretty sweet that allowed you to get all the descendants and all of THEIR descendants from a specified control.</p>
  
  <p>I'm looking for a similar method for JavaFX.</p>
  
  <p>I saw that the <code>Parent</code> class is what I want to work with since it is the class from which all Node classes that bear children are derived.</p>
  
  <p>This is what I have so far (and I haven't really found anything on google with searches like "JavaFX get all nodes from a scene"):</p>
  
  <pre><code>public static ArrayList&lt;Node&gt; GetAllNodes(Parent root){
      ArrayList&lt;Node&gt; Descendents = new ArrayList&lt;&gt;();
      root.getChildrenUnmodifiable().stream().forEach(N -&gt; {
          if (!Descendents.contains(N)) Descendents.add(N);
          if (N.getClass() == Parent.class) Descendents.addAll(
              GetAllNodes((Parent)N)
          );
      });
  }
  </code></pre>
  
  <p>So how do I tell if N is a parent (or extended from a parent)? Am I doing that right? It doesn't seem to be working... It's grabbing all the nodes from the root (parent) node but not from the nodes with children in them. I feel like this is something that's probably got an answer to it but I'm just asking the question... wrong. How do I go about doing this?</p>