Method usage

examples/src/main/java/Shell.java:112–117

Print a usage message.

(String s)

    /** Print a usage message. */
    private static void usage(String s) {
        p("Didn't understand \"" + s + "\".");
        p("Valid arguments are:");
        p("-version 100|110|120|130|140|150|160|170");
        System.exit(1);
    }

    /**
     * Print a help message.