title: How to append text to file in Java 8 using specified Charset
body: <p>I'm looking for an easy and save solution to append text to a existing file in Java 8 using a specified <code>Charset cs</code>. The solution which I found <a href="https://stackoverflow.com/questions/1625234/how-to-append-text-to-an-existing-file-in-java">here</a> deals with the standard <code>Charset</code> which is a no-go in my situation.</p>