ifest/uses-sdk-element.html#ApiLevels">API level 1</a></div>
        
  

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    <div class="jd-details-descr">
      
  <div class="jd-tagdata jd-tagdescr"><p>Handles the actual <code><a href="../../../../../reference/javax/security/auth/callback/Callback.html">Callback</a></code>. A <code>CallbackHandler</code> needs to
 implement this method. In the method, it is free to select which <code>Callback</code>s it actually wants to handle and in which way. For example, a
 console-based <code>Callbac