public void handle(Callback[] callbacks) throws UnsupportedCallbackException {
for (int i = 0; i < callbacks.length; i++) {
if (callbacks[i] instanceof NameCallback) {
// prompt the user for a username
NameCallback nc = (NameCallback) callbacks[i];
nc.setName(userid);
} else if (callbacks[i] instanceof PasswordCallback) {
PasswordCallback pc = (PasswordCallback) callbacks[i];
pc.setPassword(password.toCharArray());
}
}
}
