Error Compiliing:symbol : class TextFileInput

Question

Greetings,
I have two computers with the java compiler installed. On one, the program works perfect. On the other computer, it doent.
Here is the error message I get when I compile the program:
symbol : class TextFileInput
location: class Project1
          TextFileInput dataFile = new TextFileInput(f);
^
C:\cs212\Project1.java:66: cannot find symbol
symbol : class TextFileInput
location: class Project1
          TextFileInput dataFile = new TextFileInput(f);
^
2 errors
Tool completed with exit code 1
The program works fine on the other computer. I have the same compiler version installed on both computers. I tried making changes to the class path but doesnt seem to work. What should I do. Please help
Below is the code of my program:
public class Project1
     * Main method.
     * @param args command-line arguments - inputFile.txt needed
     public static void main(String[] args)
          String filename      = args[0];
final int ELEMENTS      = 10;
          String[] namesArray = new String[ELEMENTS];
          String[] speciesArray = new String[ELEMENTS];
          int     [] ageArray = new int [ELEMENTS];
          if (args.length != 1)
               System.out.println("You have entered wrong "
               + "argument information. Exiting the system");
          System.exit(0);
     }//end if args.length != 1
          int arraySize = readFile(args[0],speciesArray, namesArray, ageArray);
          displayResults(speciesArray, namesArray, ageArray, arraySize);
          sort(speciesArray, namesArray, ageArray, arraySize);
          displayResults(speciesArray, namesArray, ageArray, arraySize);
}// end main
     * readfile method.- Read data from inputFile.txt and place
     * it into Arrays
     * @param f - the name of the file - inputFile.txt
     * @param sp - speciesArray - Array that contains the species
     * @param na - nameArray - Array that contains the animal names
     * @param a - ageArray - Array that contains animal age
     * @return - the size of the array to a variable called arraySize
     public static int readFile(String f, String[] sp, String[] na, int[] a)
          TextFileInput dataFile = new TextFileInput(f);
//final String lineBreak = System.getProperty("line.separator");
          // Input the first line from the file:
     String line      = dataFile.readLine();
     int lengthFilled      = 0;
          // Read the content of the file and place it in a string of arrays
          while (line != null )
               StringTokenizer st = new StringTokenizer(line, "|");
               String species = st.nextToken();
               String name = st.nextToken();
               int age = Integer.parseInt(st.nextToken());
               boolean validate = isValidSpecies(species);
if (validate != true)
                    System.out.println("The line: \""+ line + "\""+ " in the file is not valid");
               System.out.println("It will not be included in the array");
               line = dataFile.readLine();
          else
                    sp[lengthFilled] = species;
                    na[lengthFilled] = name;
                    a [lengthFilled] = age;
                    lengthFilled++;
               line                = dataFile.readLine();
          }//end else
          }// end while loop
     dataFile.close();
          return lengthFilled;
     }//end readFile
     * isValidSpecies method. - Makes sure the species is either a CAT or DOG
     * @param s - the species value of the array at xxx position
     * @return - it will return true if the species name is either CAT or DOG
     * - else it will return false.
     public static boolean isValidSpecies(String s)
          if ( (s.compareTo("DOG") == 0) || (s.compareTo("CAT") == 0))
          return true;
     else
          return false;
}//end isValidSpecies
* sort method. - It sorts the array based on name.
* @param sp - speciesArray - Array that contains the species
* @param na - nameArray - Array that contains the animal names
* @param a - ageArray - Array that contains animal age
* @param length - the size of the partially filled array
     public static void sort(String[] sp, String[] na, int[] a, int length)
          //Sort the array using selection sort array.
          for (int i = 0; i < length; i++)
               // Find the lowest-valued element in
               // the subarray from index i up to
               // index length - 1
               int indexLowest = i;
               for (int j = i + 1; j < length; j++)
                    if ( na.compareTo(na[indexLowest]) <= 0 )
                         indexLowest = j;
                    // Put the lowest-valued element at
               // index i, swapping if necessary:
                    if ( na[indexLowest].compareTo(na[i]) <= 0 )
                         String tempName = na[indexLowest];
                         String tempSpecie = sp[indexLowest];
                         int tempnumb = a [indexLowest];
                         na[indexLowest] = na[i];
                         sp[indexLowest] = sp[i];
                         a [indexLowest] = a [i];
                         na[i] = tempName;
                    sp[i] = tempSpecie;
                         a [i]           = tempnumb;
                    }//end if
}//for loop
     }//for loop
}//end sort method
* displayResults method. - Display the info from the arrays to a JOptionPane.
* @param sp - speciesArray - Array that contains the species
* @param na - nameArray - Array that contains the names
* @param a - ageArray - Array that contains animal age
* @param length - the size of the partially filled array
     public static void displayResults(String[] sp, String[] na, int[] a, int length)
          JTextArea textArea = new JTextArea();
     textArea.setEditable(false);
     final String lineBreak = System.getProperty("line.separator");
          for (int i = 0; i < length; i++)
          textArea.append(sp[i] + " " + na[i] + " " + a[i] + lineBreak);
          JOptionPane.showMessageDialog(null, textArea);
}// end displayResults
}//end class Project1

Answer 1

How could that be, that the class TexFileinput is
missing. The installation of java, I believe version
1.5.0_04 was done at the same time on both machines.That class is one of your classes. It's not part of Java. Look for it.
Anyway, the classpath seem to be the same?
I know the path is the same on both computers, but I
dont know where to check for the class path.Type echo %classpath% at a cmd prompt.
Thanks alot for your prompt response!!!!