Array Index out of bounds

[leapinlizard]

Hi, someone please help me trace out the problem because I tried everything still can't figure out where's the problem ...
: 7 Line 23

public class BookTest
{
	public static void main(String args[])

	{
               Book bookArray[] = new Book[10]; 
                
	 	String dataArray [][] = {{"Java","Davis","123","Wiley","London","25.50","Book"},
					 {"Where's my car", "Aston Kutcher","777","ORiely","Dallas","5.95","Fiction","123","456"},
					 {"Earthquakes","ChuckBerry","435","LABooks","LA","75.00","NonFiction"},
					 {"C++","Jones","456","Random","NY","10.75","Book"},
					 {"Doom","The Rock","918","Sans Publishing","LA","12.50","Fiction","1233","2323"}, 
					 {"Universal Studios","Walt","987","Dell","Houston","29.90","NonFiction"}};
	
                for (int i=0; i<bookArray.length; i++)
                {
                	
                         bookArray[i]=new Fiction (dataArray[i][0],dataArray[i][1], Integer.parseInt(dataArray[i][2]), new Publisher(dataArray[i][3],dataArray[i][4]), Double.parseDouble(dataArray[i][5]),i, new Background(dataArray[i][7], dataArray[i][8]));
   
  			    
 			if (dataArray[i][6].equals("Fiction"))
			
			  bookArray[i]=new Fiction (dataArray[i][0],dataArray[i][1], Integer.parseInt(dataArray[i][2]), new Publisher(dataArray[i][3],dataArray[i][4]), Double.parseDouble(dataArray[i][5]),i, new Background(dataArray[i][7], dataArray[i][8]));
                        

                         
			if (dataArray[i][6].equals("NonFiction"))
			
                          bookArray[i]= new NonFiction(dataArray[i][0],dataArray[i][1], Integer.parseInt(dataArray[i][2]), new Publisher(dataArray[i][3],dataArray[i][4]), Double.parseDouble(dataArray[i][5]),"History");
                                                 

			


		}// end of FOR Loop


            
         	
                for (int j=0; j<10;j++)
                    {
                  //  bookArray[j].calculateTotalCharge((j+2)*3,Double.parseDouble(dataArray[j][5]));
                 

             	    System.out.println();
		    System.out.println();
                    System.out.printf(bookArray[j].toString());

                    } //end of for with j  

	               
       } //end of main
} //end class BookTest

[Fubarable]

Let's look at a plain Book entry in your data array:

{"Java", "Davis", "123", "Wiley", "London", "25.50", "Book"}

You'll notice that if your data array entry is a plain Book, it only has 7 Strings in its array, meaning the array goes from [i][0] to [i][6] (this is because arrays start at 0 -- are "0" based). If you try to go beyond this with a plain Book, you will run out of data and this exception will be thrown. For instance, here:

      if (dataArray[i][6].equals("Book"))
        bookArray[i] = new Fiction(dataArray[i][0], dataArray[i][1], 
          Integer.parseInt(dataArray[i][2]), new Publisher(dataArray[i][3],
          dataArray[i][4]), Double.parseDouble(dataArray[i][5]), i,

          // *** this last line will throw the exception ***
          new Background(dataArray[i][7], dataArray[i][8]));

This probably shouldn't be a new Fiction object here but instead should be a new Book object. Likely your Book constructor (which we never see) doesn't ask for a Background object. At least that's my guess.

[leapinlizard]

well still doing same thing or may be i don't understand

 
public class BookTest
{
	public static void main(String args[])

	{
               Book bookArray[] = new Book[10]; 
                
	 	/*String dataArray [][] = {{"Java","Davis","123","Wiley","London","25.50","Book"},
					 {"Where's my car", "Aston Kutcher","777","ORiely","Dallas","5.95","Fiction","123","456"},
					 {"Earthquakes","ChuckBerry","435","LABooks","LA","75.00","NonFiction"},
					 {"C++","Jones","456","Random","NY","10.75","Book"},
					 {"Doom","The Rock","918","Sans Publishing","LA","12.50","Fiction","1233","2323"}, 
					 {"Universal Studios","Walt","987","Dell","Houston","29.90","NonFiction"}};
 
 */

	 	String dataArray [][] = {{"Where's my car", "Aston Kutcher","777","ORiely","Dallas","5.95","Fiction","123","456"},
				         {"Earthquakes","ChuckBerry","435","LABooks","LA","75.00","NonFiction"},
					 {"Doom","The Rock","918","Sans Publishing","LA","12.50","Fiction","1233","2323"}, 
					 {"Universal Studios","Walt","987","Dell","Houston","29.90","NonFiction"}};
		
 

               for (int i=0; i<bookArray.length; i++)
                {
                	
                         bookArray[i]=new Fiction (dataArray[i][0],dataArray[i][1], Integer.parseInt(dataArray[i][2]), new Publisher(dataArray[i][3],dataArray[i][4]), Double.parseDouble(dataArray[i][5]),i, new Background(dataArray[i][7], dataArray[i][8]));
   
  			    
 			if (dataArray[i][6].equals("Fiction"))
			
			  bookArray[i]=new Fiction (dataArray[i][0],dataArray[i][1], Integer.parseInt(dataArray[i][2]), new Publisher(dataArray[i][3],dataArray[i][4]), Double.parseDouble(dataArray[i][5]),i, new Background(dataArray[i][7], dataArray[i][8]));
                        

                         
			if (dataArray[i][6].equals("NonFiction"))
			
                          bookArray[i]= new NonFiction(dataArray[i][0],dataArray[i][1], Integer.parseInt(dataArray[i][2]), new Publisher(dataArray[i][3],dataArray[i][4]), Double.parseDouble(dataArray[i][5]),"History");
                                                 

			


		}// end of FOR Loop


            
         	
                for (int j=0; j<10;j++)
                    {
                  //  bookArray[j].calculateTotalCharge((j+2)*3,Double.parseDouble(dataArray[j][5]));
                 

             	    System.out.println();
		    System.out.println();
                    System.out.printf(bookArray[j].toString());

                    } //end of for with j  

	               
       } //end of main
} //end class BookTest

[Fubarable]

Print out your code onto paper and with a pencil walk through what your code will do each step of the way. You'll see that every book is assigned to into a Fiction object whether it's a Fiction book or not. Then you'll know how to fix this.

Best of luck.

[leapinlizard]

Thank you so much i got it!

[Fubarable]

Great! Happy coding!