title: Add double slash to a path
body: <p>The method <code>System.getProperty("user.dir")</code> returns something like this:</p>
  
  <pre><code>C:\Users\myuser\path
  </code></pre>
  
  <p>But in my program I need to have double slash, like this:</p>
  
  <pre><code>C:\\\Users\\\myuser\\\path
  </code></pre>
  
  <p>Is there a simple way to add these double slashes?</p>