How do I find characters in a file?

Question

Hi people who knows (a lot) more about Java than I do... :)
I have an array (intChars) containing integers written from a text file.
Now I would like to create a new array with all the positions in intChars where the character '{' happens to be.
I've tried something like this, but that doesn't seem to work. :(
            int posTuborgBegin = Arrays.binarySearch(intChars, (int)'{' ); What is a better way to find all the positions where a given character is in a file?
Please, don't give me an answer that a newbie can't understand. Thanks.
Regards,
Stefan

Answer 1

Maybe something like that, yes. But I don't
understand it fully.
I might need to take a brake...Have a look at this demo:
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
class Main {
    public static void main(String[] args) throws IOException {
        System.out.println(charIndexes("Main.java", '{'));
    static List<Integer> charIndexes(String fileName, char ch) throws IOException {
        int offSet = 0;
        List<Integer> positions = new ArrayList<Integer>();
        Scanner scan = new Scanner(new File(fileName));
        while(scan.hasNextLine()) {
            String line = scan.nextLine();
            for(int i = 0; i < line.length(); i++) {
                if(line.charAt(i) == ch) {
                    positions.add(offSet+i);
            offSet += line.length();
        scan.close();
        return positions;
}As you can see it uses a dynamic list (an ArrayList) to store the indexes of the occurrences of a specific character.
http://java.sun.com/j2se/1.5.0/docs/api/java/util/ArrayList.html
Edit:
Note that when you are reading your textfile as bytes you will receive different indexes since the EOL bytes will also get counted.