title: How to do multiple writes to the same file. [JAVA]
body: <p>Have this method:</p>
  
  <p><a href="https://i.stack.imgur.com/xrwc7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xrwc7.png" alt="enter image description here"></a></p>
  
  <p>That will be called several times. </p>
  
  <p>My objective is at each call it writes after the content that is already on that file, not overwriting anything. How it's done it just writes the content of the last call.</p>
  
  <p>How can I do it?</p>
  
  <p>Thanks in advance. </p>