title: How to use the "findBy" method?
body: <p>I'm pretty new to programming, so please have mercy :)</p>
  
  <p>I have to work on a project with Spring and I currently have some struggles on how to use the findBy Method.</p>
  
  <p>I want to create a folder-system, where you can see every folder other users shared by setting the <code>private boolean shared = true;</code></p>
  
  <p>Next thing I did was to edit the service class of "folder" and I want to write something like this:</p>
  
  <pre><code>public List&lt;Folder&gt; getsharedFolder() {
      return folderRepository.findBy___();
  }
  </code></pre>
  
  <p>How can I exactly get folders where the boolean "shared" was set to true?</p>