gistfile1.java

    // This method returns whether or not the server supports UUIDs
    private boolean supportsUuids() {
        String packageName = Bukkit.getServer().getClass().getPackage().getName();
        // Get full package string of CraftServer.
        // org.bukkit.craftbukkit.versionstring (or for pre-refactor, just org.bukkit.craftbukkit
        String version = packageName.substring(packageName.lastIndexOf('.') + 1);
        if (version.equals("craftbukkit")) {
            return false;
        }
        String[] split = version.split("_");
        if (split.length != 3) {
            getLogger().log(Level.SEVERE, "Package version specifier of unknown format found: '" + version + "' - this will prevent PluginName from confirming server version.");
            getLogger().log(Level.SEVERE, "Please confirm you are running CraftBukkit version 1.7.8 or newer, or the equivalent for your server software. If you have already done so, you can ignore this message.");
            getLogger().log(Level.SEVERE, "Proceed with caution! PluginName will not function on minecraft versions below 1.7.8!");
            return true;
        }
        int first, second, third;
        try {
            first = Integer.parseInt(split[0].substring(1)); // substring for v1 -> 1
            second = Integer.parseInt(split[1]);
            third = Integer.parseInt(split[2].substring(1)); // substring for R1 -> 1
        } catch (NumberFormatException ignored) {
            getLogger().log(Level.SEVERE, "Package version specifier of unknown format found: '" + version + "' - this will prevent PluginName from confirming server version.");
            getLogger().log(Level.SEVERE, "Please confirm you are running CraftBukkit version 1.7.8 or newer, or the equivalent for your server software. If you have already done so, you can ignore this message.");
            getLogger().log(Level.SEVERE, "Proceed with caution! PluginName will not function on minecraft versions below 1.7.8!");
            return true;
        }
        // if we're on minecraft v2.X, the other version parts don't matter
        return first > 1 || second > 7 || (second == 7 && third >= 3);
    }