JAVA -- Using IntelliJ

Question: add a Main class to the project with a main method that starts the game by creating a Game object and calling its play method.

I've tried using the book solution, but IntelliJ is throwing errors. Given solution is:

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public class Main { //Method to call Game public static void game() { //Create the object for game Game game=new Game(); //Call the play method game.play(); } } 

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And it's supposed to call the play method from this Game class:

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public class Game

{

private Parser parser;

 private Room currentRoom; /**  * Create the game and initialise its internal map.  */  public Game() { createRooms(); parser = new Parser(); } /**  * Create all the rooms and link their exits together.  */  private void createRooms() { Room garage, kids, master, living, office, upstairs; // create the rooms garage = new Room("in the room you park your car in","Emptiness",0); living = new Room("in the largest room in the house","A relaxing couch",100); kids = new Room("in a place where kids dwell","Droves of toys",30); master = new Room("in the safest place on earth","Comfortable looking bed",80); office = new Room("Where work gets done","Computer system",20); upstairs = new Room("in a very open room with two doors","Dirty clothes from the past 2 weeks",10); // initialise room exits garage.setExit("north", living); living.setExit("east", office); living.setExit("west", upstairs); living.setExit("south", garage); office.setExit("west", living); kids.setExit("north", upstairs); master.setExit("east", upstairs); upstairs.setExit("west", master); upstairs.setExit("south", kids); upstairs.setExit("east", living); currentRoom = garage; // start game outside } /**  * Main play routine. Loops until end of play.  */  public void play() { printWelcome(); // Enter the main command loop. Here we repeatedly read commands and // execute them until the game is over. boolean finished = false; while (! finished) { Command command = parser.getCommand(); finished = processCommand(command); } System.out.println("Thank you for playing. Good bye."); } /**  * Print out the opening message for the player.  */  private void printWelcome() { System.out.println(); System.out.println("Welcome to Choose your adventure (family edition)!"); System.out.println("This is a new, incredibly boring adventure game."); System.out.println("Type 'help' if you need help."); /**  * Cleaned up old code. Implemented new code to print current location  */  System.out.println(); printLocationInfo(); } /**  * Given a command, process (that is: execute) the command.  * @param command The command to be processed.  * @return true If the command ends the game, false otherwise.  */  private boolean processCommand(Command command) { boolean wantToQuit = false; if(command.isUnknown()) { System.out.println("I don't know what you mean..."); return false; } String commandWord = command.getCommandWord(); if (commandWord.equals("help")) { printHelp(); } else if (commandWord.equals("go")) { goRoom(command); } else if(commandWord.equals("look")) { look(); } else if (commandWord.equals("quit")) { wantToQuit = quit(command); } else if (commandWord.equals("run")) { System.out.println("You can't run! This is your life now!"); } return wantToQuit; } // implementations of user commands: /**  * Print out some help information.  * Here we print all commands words.  */  private void printHelp() { System.out.println("You are lost. You are alone. You wander"); System.out.println("around at your house."); System.out.println(); System.out.println("Your command words are:"); String str = parser.showCommands(); System.out.println(str); } /**  * Try to go in one direction. If there is an exit, enter  * the new room, otherwise print an error message.  */  private void goRoom(Command command) { if(!command.hasSecondWord()) { // if there is no second word, we don't know where to go... System.out.println("Go where?"); return; } String direction = command.getSecondWord(); // Try to leave current room. Room nextRoom = currentRoom.getExit(direction); if (nextRoom == null) { System.out.println("There is no door!"); } else { currentRoom = nextRoom; /**  * Cleaned up old code. Implemented new code to print current location  */  printLocationInfo(); } } private void look() { System.out.println(currentRoom.getLongDescription()); } /**  * This section prints out information about the current location  * meaning it prints the exits for the player. (Current from 8.7 on)  */ private void printLocationInfo() /**  * Created new method printLocationInfo() to help reduce code and  * efficiently post printing the exits.  */ { System.out.println("You are " + currentRoom.getLongDescription()); System.out.print("Exits: "); if(currentRoom.getExit("north") != null) System.out.print("north "); if(currentRoom.getExit("east") != null) System.out.print("east "); if(currentRoom.getExit("south") != null) System.out.print("south "); if(currentRoom.getExit("west") != null) System.out.print("west "); System.out.println(); } /**  * Created new method printLocationInfo() to help reduce code and  * efficiently post printing the exits. (Code for Ex. 8.5 and 8.6) private void printLocationInfo() {  System.out.println("You are " + currentRoom.getDescription());  System.out.print("Exits: ");  if(currentRoom.northExit != null)  System.out.print("north ");   if(currentRoom.eastExit != null)  System.out.print("east ");   if(currentRoom.southExit != null)  System.out.print("south ");   if(currentRoom.westExit != null)  System.out.print("west ");  System.out.println(); } */  /**  * "Quit" was entered. Check the rest of the command to see  * whether we really quit the game.  * @return true, if this command quits the game, false otherwise.  */  private boolean quit(Command command) { if(command.hasSecondWord()) { System.out.println("Quit what?"); return false; } else { return true; // signal that we want to quit } } } 

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