title: Base64 encoding Allowed Characters
body: <p>I'm using Base64 encoding for encoding user id field in Java.</p>
  
  <pre><code>String abc = new String(Base64.encodeBase64("Actualuseridfield"));
  </code></pre>
  
  <p>I want to know whether the string abc above will contain the character " , : or not?</p>
  
  <p>When the Base64 encoded string is returned in abc, will it ever contain below characters?</p>
  
  <pre><code>" &lt;double quote&gt; 
  , &lt;comma&gt; 
  : &lt;colon&gt;
  </code></pre>