title: Change file in jar
body: <p>so, i have a jar file and in this jar there is another config.js file, and in this file i want to write. I have a Resource class of this file (org.springframework.core.io.Resource), so i can get a full URL or getFile() from this Resource. URL look's like this:</p>
  
  <pre><code>jar:file:/Users/admin/.m2/repository/code/1.1-SNAPSHOT/code-1.1-SNAPSHOT.jar!/META-INF/config.js
  </code></pre>
  
  <p>The porblem is, if i try to getFile() from Resource i get an Exception :  cannot be resolved to absolute file path because it does not reside in the file system.
  So how can i write to this file in jar?:)</p>