Java matcher - one less result than expected

Question

Hi all,
I have a question about the Java matcher, which may have a very simple answer, but after a while trying to find the answer (through debugging and googling), I have come up with no solution.
Basically, I am trying to parse through CSV files and find text matching a user-defined String that is entered. I have written a small CSV file and have written many instances of one word (for instance "java"). However when I use the matcher.find() method upon the content of the CSV file, it always finds one less match than are actually in the file! (e.g. if there are 6 instances of the word 'java', the matcher finds 5). I have printed the contents of the CSV file to the screen and the whole file is correctly displayed, so it must be something to do with the way the matcher works. Here is my code, although it is only basic at the moment:
        Pattern pattern = Pattern.compile("java", Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(pageContents); // this is a String containing the contents of the CSV file.
        ArrayList<String> allMatches = new ArrayList<String>();
        if (!matcher.find()) {
            System.err.println("\nNo Matching Data Could Be Found In This Text File.\n");
            System.exit(0);
     while (matcher.find()) {           
            String individualMatch = matcher.group().trim();
            System.out.println(individualMatch);
            allMatches.add(individualMatch);
        return allMatches;So basically I am returning an ArrayList of Strings which contains all matches of the word "java" (just as an example).
Any help would be greatly appreciated!
Thanks,
Jon

Answer 1

if (!matcher.find()) {  // This line matches the first one, and throws it away
System.err.println("\nNo Matching Data Could Be Found In This Text File.\n");
System.exit(0);
     while (matcher.find()) {  // .. since you call find here again.         
String individualMatch = matcher.group().trim();
System.out.println(individualMatch);
allMatches.add(individualMatch);
return allMatches;Kaj