class Dungeon { ... // Previous code here
  public void nextRoom(){
    this.getCurrentRoom().monsters[0] = new Monster();
    this.current_room = RandomFactory.randomLocation( 
      this.rooms.length, this.rooms[0].length);
    this.getCurrentRoom().monsters[0] = this.player; 
  }
  public Room getCurrentRoom(){
    return this.rooms[this.current_room.x][this.current_room.y];
  }
  public void printCurrentRoom(){
    new RoomWrapper(this.getCurrentRoom()).print();
  }
}