Problem with arrays. StringTokenizers (null pointer)

[D diller]

Nevermind, I figured out a way around it - I will just put all the following data after the first line into the array, and store the first line (which is just an int value that says the number of lines after it) in a different public variable. Just did it, works like a charm!

I am trying to load a file and put its data into an array so that I can more easily use it; that's not really presenting a problem, as I can get that just fine. What I'm encountering is that when I try to extract a specific set of chars using a StringTokenizer from each element in that array I get some funky results.

	public Library(File file) throws FileNotFoundException, IOException{
		String line;
		try{
			BufferedReader fin = new BufferedReader(new FileReader(file));
			line = fin.readLine();
			//int els = Integer.parseInt(line)+1;
			libraryFile = new String[Integer.parseInt(line)];
			libraryFile[0] = line;
			//create an array containing all the data of the file.
			if (line!=null){
				for (int i=1; i<Integer.parseInt(line); i++){
					libraryFile[i] = fin.readLine();
				}
			}

			fin.close();
		} catch (IOException e){
			System.out.println("Invalid file.");
			System.exit(0);
		}
		
	}

This makes the array, but I can't use it how it is. I need to make it one element longer. Each time I do, though, I get a null pointer exception. (that's if I have

			int els = Integer.parseInt(line)+1;
			libraryFile = new String[els];

).

Here is where I'm using the StringTokenizer:

	public String[] getTitles(){ //Currently returns properly except the last one.
		String[] titles;
		int j=0;
		titles = new String[Integer.parseInt(libraryFile[0])];
		for (int i=1; i><libraryFile.length; i++){
				StringTokenizer titleToken = new StringTokenizer(libraryFile[i],"~");
				titleToken.nextToken();
				titleToken.nextToken();
				String nameOfTitle = titleToken.nextToken();
				titles[j] = nameOfTitle; 
				j++;
			}
		return titles;
	}

The last value of the array returns null (default value) which isn't that much of a surprise, since I'm making it one longer than my libraryFile array.

If I change the length of my libraryFile array to the proper size, I get a null pointer exception on the StringTokenizer.

So my issue, basically, is that I can't get my original array to be sized properly. Does anybody know why, or have any tips?>

[Vikas Kapoor]

I didn't dwell into your problem but String#Split method is suggested over StringTokenizer.
From API documentation of StringTokenizer,

StringTokenizer is a legacy class that is retained for compatibility reasons although its use is discouraged in new code. It is recommended that anyone seeking this functionality use the split method of String or the java.util.regex package instead.

[Campbell Ritchie]

There is something odd; you seem to have a variable which records how many lines the file contains. That is a potential source of errors, if the counting is incorrect. You can use a while loop and != null.

Declare line inside the try block. Do your reading from the file with a while loop.

. . . while((line = fin.readLine()) != null) . . .

If you know how to use a List (ArrayList is probably the best kind of List for this purpose) simply add lines to the List.
Then you can get them back with the method in the Collections class which changes a Collection to an array, or use the List.