title: Java Class file showing question mark
body: <p>I have a java web project in which I created new class files. 
  But there is a question mark (?) showing on the class file icon. 
  Will this interfere with the execution of my project?
  Why is the question mark showing?</p>
  
  <hr>
  
  <p><strong>The icon in question:</strong></p>
  
  <p><a href="https://i.stack.imgur.com/CBKjs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CBKjs.png" alt="The icon"></a></p>