title: How to make JavaDoc link to JDK's documentation in Intellj IDEA
body: <p>I'm generating javadoc of my Java project in Intellj IDEA, and I want it to link into the JDK's documentation.</p>
  <p>I'm generating the documentation using <code>Tools &gt; Generate JavaDoc...</code>.</p>
  <p><a href="https://i.stack.imgur.com/7QMNV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7QMNV.png" alt="The JavaDoc generation dialog" /></a></p>
  <p>I've tried to add my extracted jdk java in <code>File &gt; Project Structure &gt; Platform Settings &gt; SDKs &gt; 13 &gt; Documentation Paths</code></p>
  <p><a href="https://i.stack.imgur.com/BkGsj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BkGsj.png" alt="The documentation paths dialog" /></a></p>
  <p>But it always results with this error:</p>
  <pre><code>...
  
  Constructing Javadoc information...
  javadoc: error - Error fetching URL: file://C:/Users/Rami/Documents/Documentation/jdk-13.0.2_doc-all/docs/api/
  Standard Doclet version 13.0.2
  
  ...
  </code></pre>
  <p>And the generated documentation doesn't link to my local JDK javadoc...</p>
  <p>What do I have configured wrong?</p>