public class Game 
{
    private Parser parser;
    private Room currentRoom;
    private Player currentPlayer;
   
   
        
    /**
     * Create the game and initialise its internal map.
     */
    public Game() 
    {
        createRooms();
        parser = new Parser();
        
        currentPlayer = new Player("Mark",currentRoom);
    }

    /**
     * Create all the rooms and link their exits together.
     */
    private void createRooms()
    {
        Room outside, theatre, pub, lab, office, cellar;
      
        // create the rooms
        outside = new Room("outside the main entrance of the Polytechnic");
        theatre = new Room("in a lecture theatre");
        pub = new Room("in the campus pub");
        lab = new Room("in a computing lab");
        office = new Room("in the computing admin office");
        cellar = new Room("in the cellar");
        // initialise room exits
        outside.setExit("east", theatre);
        outside.setExit("south", lab);
        outside.setExit("west", pub);

        theatre.setExit("west", outside);

        pub.setExit("east", outside);

        lab.setExit("north", outside);
        lab.setExit("east", office);
        

        office.setExit("west", lab);
        office.setExit("down", cellar);
        cellar.setExit("up", office);
        currentRoom = outside;  // start game outside
        
        // add items 
        Item textbook = new Item("this is a Java textbook",5);
        office.addItem("Textbook",textbook);
    }

some other methods omitted