Help with inputting from text file.

Question

Okay, been struggling with this for a couple days and I could really use some help.
I need to input text one line at a time into String[] text, I'm reading from a file called "textfile.txt" and I want to store the result
String[] text = { first_line, second_line, third_line, fourth_line...........etc}
This works now:
//code
String[] test =
     { "1 2, 3 4, 5 6"
     for (int i = 0; i < test.length; i++) {
     Graph g = new Graph(test);
// end code
But that of course reads "1 2, 3 4, 5 6" from the code, and not from a text file. My StringTokenizer looks for a "," and makes that the end of the token, so I need to add a "," after each line as well.
In other words, I need to turn the text file :
"1 2
3 4
5 6"
into :
"1 2, 3 4, 5 6"
These are just numbers to test of course, the real text file I need to input has hundreds of lines.
Any help would be appreciated, thank you.

Answer 1

I'm fairly lost. I understand that you need to read a file, and that file contains many lines which each contain a pair of numbers. But then you say (a) that you need to create an array of Strings and (b) that you need to store the result. And there's this mysterious StringTokenizer in there as well. You seem to be suggesting some solution that concatenates all the lines together, with commas between them, so that the StringTokenizer can then go through that concatenation and break it apart into the original pieces.
Okay, here's some code that reads through a file and makes an array of Strings, one entry per line:BufferedReader in = new BufferedReader(new FileReader("textfile.txt"));
String data = null;
List inputs = new ArrayList();
while ((data = in.readLine()) != null) {
  inputs.add(data);
in.close();
String[] lines = new String[0];
lines = (String[]) inputs.toArray(lines);Untested, and exception handling and so forth omitted. I leave it to you to decide what to do with that array of Strings.
PC&#178;