Usually exceptions have constructors with parameter of type String as a "detail massage". Sometimes these parameters are misnamed, e.g.:

    /**
     * Constructs a new {@code ProtocolException} with the
     * specified detail message.
     *
     * @param host the detail message.
     */
    public ProtocolException(String host) {
        super(host);
    }

It can lead to a confusion. Users can be affected by using autocompletion feature or just by reading constructors' definitions. This inconsistency is visible from the javadoc level as well.