Help with Scanner

[DarrelMan]

I get an unknown source error when I try to use the Scanner class.
fabric is the name of my Scanner ojbect.

while(fabric.hasNext())
                        {

                            fabricID[fabricCounter] = fabric.nextInt();
                            name[fabricCounter] = fabric.next();
                            description[fabricCounter] = fabric.next();
                            price[fabricCounter] = fabric.nextDouble();
                            qty[fabricCounter] = fabric.nextInt();
                            vendor[fabricCounter] = fabric.next();
                            fabricCounter++;
                            System.out.println("made it down here");
                        }//end while
                    fabric.close();
                }//end try
            catch(IOException e) 
                {
                    System.out.println("Nope on the reader");
                }//end catch
            System.out.println(fabricID[2]);
            System.out.println(name[2]);
            System.out.println(description[2]);
            System.out.println(price[2]);
            System.out.println(qty[2]);
            System.out.println(vendor[2]);

But if I change my while(fabric.hasNext()) to while(fabric.hasNextInt()) it skips over the whole while section.
What am I missing with Scanner? Any help is greatly appreciated.

[stultuske]

might be in the initialization of that Scanner instance.
without seeing more of the code, or the error message, don't think we can do much to help.

[DarrelMan]

Here's the whole class. I didn't want to inundate with extra code, but if it helps.

package BonitaBoutique;
import java.util.*;
import java.io.*;

public class ReadFromFiles {

    //variable declaration
    Scanner fabric;
    Scanner items;
    Scanner orders;
    String holder;
    private int arraySize = 1000;

    //variables needed for fabrics

    private int fabricCounter;
    private int [] fabricID;
    private String [] name; 
    private String [] description;
    private String [] vendor;
    private double [] price;
    private int [] qty;

    public ReadFromFiles() 
        {

            String itemsFile = "items.txt";
            String ordersFile = "orders.txt";
            holder = "";

            //variables needed for Fabrics
            description = new String[arraySize];
            fabricID = new int[arraySize];
            String fabricsFile = "fabrics.txt";
            name = new String[arraySize];
            price = new double[arraySize];
            qty = new int[arraySize];
            vendor = new String[arraySize];

            readFabrics(fabricsFile);

        }//end of method

    public void readFabrics(String fabricsFile) 
        {
            //variable declaration
            fabricCounter = 0;

            try 
                {
                    fabric = new Scanner(new File(fabricsFile));
                    fabric.useDelimiter("@#$");
                    while(fabric.hasNext())
                        {

                            fabricID[fabricCounter] = fabric.nextInt();
                            name[fabricCounter] = fabric.next();
                            description[fabricCounter] = fabric.next();
                            price[fabricCounter] = fabric.nextDouble();
                            qty[fabricCounter] = fabric.nextInt();
                            vendor[fabricCounter] = fabric.next();
                            fabricCounter++;
                            System.out.println("made it down here");
                        }//end while
                    fabric.close();
                }//end try
            catch(IOException e) 
                {
                    System.out.println("Nope on the reader");
                }//end catch
            System.out.println(fabricID[2]);
            System.out.println(name[2]);
            System.out.println(description[2]);
            System.out.println(price[2]);
            System.out.println(qty[2]);
            System.out.println(vendor[2]);
    }//end method

    public void readItems(String itemsFile) 
        {

        }//end method



    public void readOrders(String ordersFile) 
        {

        }//end method

}//end of class

[stultuske]

have you tried printing the stacktrace in the catchblock? have you verified that the file is actually found?
you may also have miscounted the number of columns / lines in your input file, or use a next where you should 've used a nextInt or something like that.

[DarrelMan]

I got it to work...kind of. I am treating everything as a String for now, then parsing it into int and double as necessary. However, it reads the entire file in the first fabric.next(). It seems to ingore the delimiter.

fabric = new Scanner(new File(fabricsFile));
                    fabric.useDelimiter("@#$");
                    while(fabric.hasNext())
                        {
                            tempFabricID = fabric.next();
                            //fabricID[fabricCounter] = Integer.parseInt(tempFabricID);
                            //name[fabricCounter] = fabric.next();
                            //description[fabricCounter] = fabric.next();
                            //tempPrice = fabric.next();
                            //price[fabricCounter] = Double.parseDouble(tempPrice);
                            //tempqty = fabric.next();
                            //qty[fabricCounter] = Integer.parseInt(tempqty);
                            //vendor[fabricCounter] = fabric.next();
                            //fabricCounter++;
                            //fabric.nextLine();
                            System.out.println("made it down here");
                        }//end while
                    fabric.close();
                }//end try
            catch(Exception e) 
                {
                    System.out.println(e);
                }//end catch
            System.out.println(tempFabricID);
            System.out.println(name[2]);
            System.out.println(description[2]);
            System.out.println(price[2]);
            System.out.println(qty[2]);
            System.out.println(vendor[2]);

[stultuske]

might be, but it could also be your input file is not the way the code thinks it does, based on that delimeter.
can you show a bit of your input file here?

[DarrelMan]

Of course. The file I am parsing is:

1000@#$Darrel@#$Darrel is Awesome!@#$2.99@#$23@#$Walmart@#$
1001@#$DArrel@#$Darrel is Awesome!@#$2.98@#$23@#$WalMart@#$
1002@#$DaRRel@#$Darrel IS Awesome!@#$2.99@#$23@#$Walmart@#$
1003@#$DarrEl@#$Darrel is Awesome!@#$2.99@#$93@#$Walmart@#$

[JamesCherrill]

The delimiter you specify for a Scanner is not just a String, it's a Regex pattern, but $ is a special character in a regex, so maybe your delimiter is being parsed in a way you didn't expect.
Have a look at the API doc for Pattern for more details

[DarrelMan]

That was exactly the problem! I changed it to simply @# and it worked perfectly!

Thank you.

[JamesCherrill]

Hey, that's great!
Please mark this "solved" for our knowledge base - others may hit the same problem in future.
J