title: Worst Java practice found in your experience?
body: <p>Similar to <a href="https://stackoverflow.com/questions/233030/worst-php-practice-found-in-your-experience">this question</a>...</p>
  
  <p>What are the worst practices you actually found in Java code?</p>
  
  <p>Mine are:</p>
  
  <ul>
  <li>using instance variables in servlets (it's not just bad practice but bug, actually)</li>
  <li>using Collection implementations like HashMap, and not using the appropriate interfaces</li>
  <li>using seemingly cryptic class names like SmsMaker (SmsFactory) or CommEnvironment (CommunicationContext)</li>
  </ul>