public Command getCommand(String string){
        Explore explore = new Explore();

        String param;
        int length;

        //if its the command EXPLORE
        if(string.trim().toUpperCase().startsWith(commandList.get(9).getName())){
            //find the length of the command
            length=string.toUpperCase().length();
            //get the next substring after the command Eplore (to find out the paramater of the command)
            param = string.substring(length);
            //and set it as the parameter of EXPLORE command
            explore.setParams(param);
            return commandList.get(9);
             }

        for(int i=0;i<commandList.size();i++){
            if(string.trim().toUpperCase().startsWith(commandList.get(i).getName()))
                return commandList.get(i);
        }
        return null;
    }