void jTextFieldSendSubject_keyPressed(KeyEvent e) {
   if (e.getKeyCode() == e.VK_DOWN) {
     String s = subjectHistory.forward();
     if (s != null) {
       jTextFieldSendSubject.setText(s);
     }
   } else if (e.getKeyCode() == e.VK_UP) {
     String s = subjectHistory.back();
     if (s != null) {
       jTextFieldSendSubject.setText(s);
     }
   } else if (e.getKeyChar() == '\n') {
     jTextFieldSendMessages.requestFocus();
   }
 }
 void jTextFieldSendMessages_keyPressed(KeyEvent e) {
   if (e.getKeyCode() == e.VK_DOWN) {
     String s = msgHistory.forward();
     if (s != null) {
       jTextFieldSendMessages.setText(s);
     }
   } else if (e.getKeyCode() == e.VK_UP) {
     String s = msgHistory.back();
     if (s != null) {
       jTextFieldSendMessages.setText(s);
     }
   } else if (e.getKeyChar() == '\n') {
     String body = jTextFieldSendMessages.getText();
     if (body.length() > 0) {
       if (body.charAt(body.length() - 1) == '\n') body = body.substring(0, body.length() - 1);
       String subject = jTextFieldSendSubject.getText();
       if (subject.length() > 0) {
         if (subject.charAt(subject.length() - 1) == '\n')
           subject = subject.substring(0, subject.length() - 1);
       }
       if (session != null && session.isConnected()) {
         session.postMessage(jTextFieldTargetUser.getText(), subject, body);
         displaySendMessage(subject, jTextFieldTargetUser.getText(), body, outgoingMsgAttrSet);
       }
       msgHistory.add(body);
       subjectHistory.add(subject);
       subjectHistory.reset();
       msgHistory.reset();
       jTextFieldSendMessages.setText("");
       jTextFieldSendSubject.setText("");
     }
   }
 }