Program not outputting properly

Question

Hey guys, I have this code that's supposed to take in 2 values per line from a file ( the first is a long, then a string stored in a class Student) and store them as a binary heap (a class I created and works properly), then print out the contents of the heap. Here is the code:
import java.util.Scanner;
public class ListPrinter
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        BinHeap<Student> heap = new BinHeap();
        System.out.println("Enter location of student records: ");
        Scanner fileScan = new Scanner(scan.nextLine());
        while(fileScan.hasNext()){
            if(fileScan.hasNextLong()){
                long id = fileScan.nextLong();
                if(id > 0){
                    if(!(scan.hasNextDouble())){
                        String name = fileScan.next();
                        heap.insert(new Student(id, name));
                else
                    fileScan.nextLine();
            else
                fileScan.nextLine();
        System.out.println("Sudent list:");
        int i=1;
        while(!(heap.isEmpty())){
            System.out.println(i + ". " + (heap.deleteMin()).toString());
            i++;
}Right now I'm inputting only correct values from a file. When run, the program displays:
cameron@cameron-laptop:~/Desktop/cpe103/project2$ java ListPrinter
Enter location of student records:
LPTest.txt
Sudent list:
cameron@cameron-laptop:~/Desktop/cpe103/project2$
There should be 2 student items printed, but there's nothing. Whats going on? Keep in mind that both classes BinHeap and Student are implemented correctly so I know the problem is not there. Thanks for any help!
Edited title by: sublimeph03nix on Apr 26, 2009 5:07 PM

Answer 1

I've tried taking in the line as a string and then parsing it, which seems to be simpler. However, now when I enter the loop, fileScan.nextLine() for some reason scans LPTest.txt as the value instead of what is in that .txt file.
Here's the new code with the test System.out.println()'s in it:
public class ListPrinter
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);      // scanner to read the filename
        BinHeap<Student> heap = new BinHeap();      // binary heap which stores student records
        System.out.println("New heap created"); // REMOVE -- TEST LINE
        System.out.println("Enter location of student records: ");
        String temp = scan.nextLine(); // REMOVE -- TEST LINE
        Scanner fileScan = new Scanner(temp);    // scanner to read the records in given file
        System.out.println("File to scan: " + temp); // REMOVE -- TEST LINE
        while(fileScan.hasNext()){
            System.out.println("Loop entered..."); // REMOVE -- TEST LINE
            String record = fileScan.nextLine();
            System.out.println("Scanned line..." + record); // REMOVE -- TEST LINE
            String[] split = record.split(" ");
            if(split.length == 2){
                try{
                    long id = Long.parseLong(split[0]);
                    System.out.println("Id scanned..." + id); // REMOVE -- TEST LINE
                    if(id > 0){
                        String name = split[1];
                        System.out.println("Name scanned..." + name); // REMOVE -- TEST LINE
                        heap.insert(new Student(id, name));
                        System.out.println("Student inserted..."); // REMOVE -- TEST LINE
                } catch(NumberFormatException e){
        System.out.println("Exited the loop..."); // REMOVE -- TEST LINE
        // prints the list of student records in ascending order
        System.out.println("Student list:");
        int i=1;
        while(!(heap.isEmpty())){
            System.out.println(i + ". " + (heap.deleteMin()).toString());
            i++;
}Also, here is a copy of the program run in the terminal:
cameron@cameron-laptop:~/Desktop/cpe103/project2$ java ListPrinter
New heap created
Enter location of student records:
LPTest.txt
File to scan: LPTest.txt
Loop entered...
Scanned line...LPTest.txt
Exited the loop...
Student list:
cameron@cameron-laptop:~/Desktop/cpe103/project2$
It's Student not Sudent...Thanks, I changed that.
Edited by: sublimeph03nix on Apr 26, 2009 7:27 PM