title: android specific writing in File
body: <p>I want to have an internal File like stock features with these properties:  </p>
  
  <p>File has a Maximum of <code>LineNumber</code> i.e.: 400.<br>
  New line appends to file until this limitation is reached; then, firstly removes the First Line and then appends New Line.<br>
  To remove a line it shouldn't be necessary to read and rewrite the whole file.<br>
  Is it possible to do it so?  </p>
  
  <p>Many thanks and best regards </p>