title: Intellij can not recognize java.util.List
body: <p>When I input <code>List</code> in Intellij, it doesn't automatically provide a prompt for importing <code>java.util</code>. I have to import <code>java.util.List</code> manually.</p>
  
  <p>When I write <code>java.util</code>, it doesn't prompt to add <code>List</code>, but instead <code>ArrayList</code>.        </p>