*/
    public static final String FEATURE_EXTERNAL_PARAMETER_ENTITIES = "http://xml.org/sax/features/external-parameter-entities";

    static {
        DEFAULT_CHARSET = Charset.defaultCharset();
    }

    /**
     * Private constructor to prevent instantiation of this class.
     */
    private Constants() {
    }

    /** The working directory for the command. */
    protected File workingDirectory = null;

    /** The encoding for the command's output. */
    protected String commandOutputEncoding = Charset.defaultCharset().displayName();

    /** The maximum number of lines to buffer from command output. */
    protected int maxOutputLine = 1000;

    /** Whether to redirect standard output to a file. */