title: Sonar: Possible nullpointer?
body: <p>I don't know why Sonar thinks that in the following line a NullPointer Exception may occur:</p>
  
  <pre><code>if (file == null || file.listFiles() == null || file.listFiles().length == 0) {//etc}
  </code></pre>
  
  <p>Do you guys have any idea?</p>