Assignment #77 and Adventure2

Code

                        /// Name: Graham Pollock
                        /// Period: 5
                        /// Program Name: Adventure 2
                        /// File Name: Adventure2.java
                        /// Date Finished: 01/29/2016/
    
    import java.util.Scanner;
        
        public class Adventure2
        {
        	public static void main( String[] args )
        	{
        		Scanner keyboard = new Scanner(System.in);
        		
        		int nextroom = 1;
        		String choice = "";
        
        		while ( nextroom != 0 )
        		{
        			if ( nextroom == 1 )
        			{
        				System.out.println( "You are in a super spooky house. you can either go 'upstairs' or 'downstairs'." );
        				System.out.print( "> " );
        				choice = keyboard.nextLine();
        				if ( choice.equals("upstairs") )
        					nextroom = 2;
        				else if ( choice.equals("downstairs") )
        					nextroom = 3;
        				else
        					System.out.println( "ERROR." );
        			}
        			if ( nextroom == 2 )
        			{
        				System.out.println( "After climbing the stairs there is a dirty room with one stattered window." );
                        System.out.println( "Do you go 'back' downstairs or try to 'jump' out the window?." );
        				System.out.print( "> " );
        				choice = keyboard.nextLine();
        				if ( choice.equals("back") )
        					nextroom = 1;
        				else if ( choice.equals("jump"))
                            nextroom = 4;                    
                        else
        					System.out.println( "ERROR." );
        			}
                    if ( nextroom == 3 )
                    {
                        System.out.println( "You walk downstairs and find a long hallway with Mark's face painted very");
                        System.out.println( "accurately on all sides of the hallway. Do you walk 'back' upstairs, or go");
                        System.out.println( "'down' the hallway?");
                        choice = keyboard.nextLine();
                        if ( choice.equals("back"))
                            nextroom = 1;
                        else if ( choice.equals("down"))
                            nextroom = 5;
                        else
                            System.out.println( "ERROR." );
                    }
                    if ( nextroom == 4 )
                    {
                        System.out.println( "The house is on the water and you land safely in the water and swim to freedom.");
                        nextroom = 0;
                    }
                    if ( nextroom == 5 )
                    {
                        System.out.println( "the hallway gets progressively janky and by the end the floorboards start to creek as if they are going to break. Do you 'continue' or go 'back'?");
                        choice = keyboard.nextLine();
                        if ( choice.equals("continue"))
                            nextroom = 6;
                        else if ( choice.equals("back"))
                            nextroom = 3;
                        else
                            System.out.println( "ERROR.");
                    }
                    if ( nextroom == 6 )
                    {
                        System.out.println( "A secret door opens and you get out safe.");
                        nextroom = 0;
                    }                   
                }
        
        		System.out.println( "\nEND." );
        	}
        	
        }
    

Picture of the output