title: How to get only symbols and numbers from file on Java
body: <p>I'm looking for some way to get easily only words and numbers, without any type of weird symbol like <code>("'/&amp;%$·...</code> so I get from a code:</p>
  
  <pre><code>int i=0;
  </code></pre>
  
  <p>This: int, i, 0.</p>
  
  <p>Any good function for Java?</p>