title: Upload Files to specified folder in Google Drive
body: <p>I am having a problem on uploading files to an existing folder in google drive. It keeps telling me "xxx" does not exist.</p>
  
  <pre><code>String folderId = "Storage";
  
  ChildReference newChild = new ChildReference();
  newChild.setId(fileContent.getName());
  
  drive.children().insert(folderId, newChild).execute();
  </code></pre>
  
  <p>refer from <a href="https://developers.google.com/drive/v2/reference/children/insert" rel="nofollow noreferrer">https://developers.google.com/drive/v2/reference/children/insert</a></p>