title: About finally block
body: <p>I know <code>finally</code>'s purpose is to <strong>guarantee</strong> that some instructions or cleanup code get executed. But what is the actuall difference of using <code>finally</code> or putting the code after the catch block.<br>
  I mean, give me an example of a case where you need to use <code>finally</code> because otherwise the code might not execute at all.</p>