What does this error mean?

Exception in thread "main" java.util.NoSuchElementException
at java.util.Scanner.throwFor(Scanner.java:838)
at java.util.Scanner.next(Scanner.java:1347)
at phonebook.main(phonebook.java:69)
Press any key to continue . . .

And these are the chunks of code I am using:

Code:

---

import java.util.Scanner;
import java.io.*;

public class phonebook
{
        public static void main (String[] args) throws IOException
        {
                String first, last, address, city, state, zipcode, number, hold;
                int zipint;
                Scanner filer, disector;
                pages entries = new pages ();

                filer = new Scanner (new File("phonebook.txt"));

                while (filer.hasNext())
                        {
                                hold = filer.nextLine();
                        disector = new Scanner (hold);
                        disector.useDelimiter("\n");

                        while (disector.hasNext())
                        {
                                        first = disector.next();
                                        last = disector.next();
                                        address = disector.next();
                                        city = disector.next();
                                        state = disector.next();
                                        zipcode = disector.next();
                                        number = disector.next();
                                        zipint = Integer.parseInt(zipcode);
                                entries.addEntry (last, first, address, city, state, number, zipint);
                                }
                      }
              System.out.println (entries);
}}

---

Code:

---

public class bookentry
{
        private String First, Last, Address, City, State, Num;
        private int Zipint;

        public bookentry (String first, String last, String address, String city, String state, String num, int zip)
        {
                First = first;
                Last = last;
                Address = address;
                City = city;
                State = state;
                Num = num;
                Zipint = zip;
        }
}

---

Code:

---

public class pages
{
        private bookentry[] bookpages;
        private int count;

        public pages ()
          {
              bookpages = new bookentry[25];
              count = 0;
          }

        public void addEntry (String first, String last, String address, String city, String state, String num, int zip)
  {
      if (count == bookpages.length)
        increaseSize();

      bookpages[count] = new bookentry (first, last, address, city, state, num, zip);
      count++;
  }


      private void increaseSize ()
      {
        bookentry[] temp = new bookentry[bookpages.length * 2];

        for (int potato = 0; potato < bookpages.length; potato++)
            temp[potato] = bookpages[potato];

        bookpages = temp;
            }

  public String toString ()
  {
          String endgame = "";
            for (int counter = 0; counter < count; counter++)
                {
                                endgame += bookpages[counter].toString() + "\n";
                        }
          return endgame;
  }

}

---

and the text file composed of randomized data

Quote:

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Cecil \n Harding \n 1453 Short Street \n Adams \n Oregon \n 97810 \n (541)987-2556
Myra \n Gray \n 1815 Coleman \n Avenue \n Adair Village \n Oregon \n 97330 \n ( 541)995-9849
Trina \n Lewis \n 1834 Byers \n Lane \n Adrian \n Oregon \n 97901 \n (541)948-6587
Damion \n Carver \n 194 Frum Street \n Albany \n Oregon \n 97321 \n (541)344-4814
Darren \n Weiss \n 4627 Sherwood Circle \n Amity \n Oregon \n 97101 \n (503)956-9501
Cristina \n Fuller \n 4835 Boone Street \n Antelope \n Oregon \n 97001 \n (541)489-8468
Dale \n George \n 2739 Findley Avenue \n Arlington \n Oregon \n 97812 \n (541)894-0959
Ann \n Oliver \n 2585 Ben Street \n Ashland \n Oregon \n 97520 \n (541)845-0661
Clinton \n Eaton \n 3217 College View \n Astoria \n Oregon \n 97520 \n (503)369-5198
Jennifer \n Webster \n 1211 Heavner Court \n Athena \n Oregon \n 97813 \n (541)864-9463
Graham \n Albert \n 4908 Finwood Road \n Aumsville \n Oregon \n 97325 \n (503)378-6187
Hunter \n Burgess \n 1460 High Meadow Lane \n Aurora \n Oregon \n 97002 \n (503)338-0919
Raquel \n Durham \n 4743 Masonic Drive \n Baker City \n Oregon \n 97814 \n (541)136-4704
Annette \n Wall \n 462 Post Farm Road \n Bandon \n Oregon \n 97411 \n (541)952-5027
Gary \n Hebert \n 2983 Alexander Avenue \n Banks \n Oregon \n 97106 \n (503)937-3066
Alfonzo \n Holden \n 440 Williams Lane \n Barlow \n Oregon \n 97013 \n (503)968-7302
Loraine \n Cole \n 2819 Melville Street \n Bay City \n Oregon \n 97107 \n (503)931-4537
Selena \n Nicholson \n 4519 Reynolds Alley \n Beaverton \n Oregon \n 97000 \n (503)914-5970
Gloria \n Hatfield \n 4472 Ventura Drive \n Bend \n Oregon \n 97701 \n (541)935-9867
Mariano \n Buck \n 2940 Clousson Road \n Boardman \n Oregon \n 97818 \n (541)939-9043
Cherie \n Bird \n 13 Davis Avenue \n Bonanza \n Oregon \n 97623 \n (541)927-4312
Roland \n Dixon \n 3285 Brown Avenue \n Brookings \n Oregon \n 97415 \n (541)912-8992
Georgina \n Bowen \n 1727 Parker Drive \n Brownsville \n Oregon \n 97327 \n (541)973-9431
Alfonso \n Noel \n 985 Caynor Circle \n Burns \n Oregon \n 97720 \n (541)968-8086
Jaime \n Buck \n 3211 Green Avenue \n Butte Falls \n Oregon \n 97522 \n (541)991-3068

---

Quote:

---

Exception in thread "main" java.util.NoSuchElementException
at java.util.Scanner.throwFor(Scanner.java:838)
at java.util.Scanner.next(Scanner.java:1347)
at phonebook.main(phonebook.java:69)

---

This stack trace is indicating that on line 69 of phonebook.java you are calling the scanner's next() method. But the Scanner instance doesn't have a next element at that time. It would help if you said which line was line 69.

Part of the problem may be the following:

Code:

---

disector.useDelimiter("\n");

---

Notice that the string "\n" has a single character (the newline character). But in your data file you separate the fields with a string of four characters (space, backslash, n, space).

Quote:

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Originally Posted by pbrockway2

This stack trace is indicating that on line 69 of phonebook.java you are calling the scanner's next() method. But the Scanner instance doesn't have a next element at that time. It would help if you said which line was line 69.

Part of the problem may be the following:

Code:

---

disector.useDelimiter("\n");

---

Notice that the string "\n" has a single character (the newline character). But in your data file you separate the fields with a string of four characters (space, backslash, n, space).

---

Ok, I decided to change out the \n to using tabs and I found where I had one too many \n in my text lines before. I completely blame my instructor who thought it was a good idea to use \n for this project.

Thank you for helping me find my error.

Edit: Now I just have to get my toString to work instead of my program printing addresses.

Great.

I guess you mean adding a toString() to the book entry class. That shouldn't be hard: but post if anything goes wrong.

One little (but important) thing is that you should use standard Java naming conventions. Classes start with a capital letter and variables with lowercase. So Bookentry (or BookEntry), first, last, zipInt etc.

Quote:

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Originally Posted by pbrockway2

Great.

I guess you mean adding a toString() to the book entry class. That shouldn't be hard: but post if anything goes wrong.

One little (but important) thing is that you should use standard Java naming conventions. Classes start with a capital letter and variables with lowercase. So Bookentry (or BookEntry), first, last, zipInt etc.

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Yeah, my instructor hasn't gone over naming conventions a lot, but I see it now with my examples. Design is actually the section we just started on.

You've been really helpful, it's something I'm not used to over forums. Again, you have my gratitude.