title: Why the intellij code autocomplete doesn't work?
body: <p>When i try to use the code autocomplete of intellij by using ctrl+space it dosen't work.
  What i need to do?
  example:
  In this code i want to use the add method of List and it dosen't give me the option to.</p>
  
  <p><a href="https://i.stack.imgur.com/q5LS5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/q5LS5.png" alt="enter image description here"></a></p>