title: Adding Jar files to IntellijIdea classpath
body: <p>I have created a new Intellij project. But I can't use the third party jars in my project. I have the jars in a directory structure as follows:<br>
  <code>repository/commons-logging/commons-logging-1.0.4.jar</code><br>
  <code>repository/commons-lang/commons-lang-2.1.jar</code><br>
  etc.  </p>
  
  <p>I want to add them just by pointing to the repository directory, but couldn't find any ways to add them.
  But when I am using classes or API from that jars, the editor can't resolve the classes.
  I have tried from Project Structure but can't configure it.</p>