title: Can apache FileUtils.writeLines() be made to append to a file if it exists
body: <p>The commons <a href="http://commons.apache.org/io/api-release/index.html?org/apache/commons/io/FileUtils.html" rel="noreferrer">FileUtils</a> look pretty cool, and I can't believe that they cannot be made to append to a file.</p>
  
  <pre><code>File file = new File(path);
  FileUtils.writeLines(file, printStats(new DateTime(), headerRequired));
  </code></pre>
  
  <p>The above just replaces the contents of the file each time, and I would just like to keep tagging this stuff to end just as this code does.</p>
  
  <pre><code>fw = new FileWriter(file, true);
  try{
      for(String line : printStats(new DateTime(), headerRequired)){
          fw.write(line + "\n");
      }
  }
  finally{ 
      fw.close();
  }
  </code></pre>
  
  <p>I've searched the javadoc but found nothing!  What am I missing?</p>