public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
    if(cmd.getName().equalsIgnoreCase("swt")){
        if(args != null && args.length > 1){
            // Arguments are present
            if(args[0].equalsIgnoreCase("info")){
                // User typed "/swt info"
            }else if(args[0].equalsIgnoreCase("help")){
                // User typed "/swt help"
            }else{
                // User typed something else (like "/swt aslkdhaskjdh")
            }
        }else{
            // No arguments provided
        }
    }
    return false;
}