Parsing multiple file names(doc) in java

Question

I am trying to parse multiple file names(doc file)in java. How should I go about doing this?

I asked a previous post and got a answer on how to parse a file name in java. Thanks for that.

So in a directory, I have multiple files(with different names). For instance, there are files

AA_2322_1

AA_2342_1

BB_2324_1

CC_2342_1

I want to parse the middle 4 digit-5digit numbers only.

please say how you have all of your filenames stored. Do you just have a directory name, a File object, a String[] of all the filenames? — waldol1, Jun 04 '13 at 16:39
Why did you ask the same thing again? In what way is the original answer not sufficient? — Micha Wiedenmann, Jun 04 '13 at 16:39
Saved them in a directory. There are multiple files in the directory. — user17651, Jun 04 '13 at 16:39
Yes. If I set the position to directory filename, would it just parse all the files inside? — user17651, Jun 04 '13 at 16:41
Check here: http://stackoverflow.com/questions/1844688/read-all-files-in-a-folder?lq=1 — waldol1, Jun 04 '13 at 16:42
Why not use a regex and match the group of `[0-9]{4,5}`. That will match a group of numbers 4-5 digits in length. — , Jun 04 '13 at 16:55

score 1 · Accepted Answer · answered Jun 04 '13 at 16:50

Suppose you have a directory C:\XYZ with the files you listed above, with .doc extensions on them. Taking advantage of a FileFilter, you can get a list of the numbers you are looking for with the following code:

File directory = new File("C:/XYZ");

final ArrayList<String> innerDigits = new ArrayList<String>();

FileFilter filter = new FileFilter() {
    @Override
    public boolean accept(File pathname) {
        if (!pathname.isFile() || !pathname.getName().endsWith("doc"))
            return false;

        // Extract whatever you need from the file object
        String[] parts = pathname.getName().split("_");
        innerDigits.add(parts[1]);

        return true;
    }
};

// No need to store the results, we extracted the info in the filter method
directory.listFiles(filter);

for (String data : innerDigits)
    System.out.println(data);

score 0 · Answer 2 · edited May 23 '17 at 11:43

0

Getting the filenames of all files in a folder - Use this question to get the name of all the files in the directory. Then use the String.split() function to parse the file names.

edited May 23 '17 at 11:43

Community

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answered Jun 04 '13 at 16:41

ageoff

2,798
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score 0 · Answer 3 · answered Jun 04 '13 at 16:45

0

You can use split method

String[] parts = filename.split("_");

Now you need parts[1]

answered Jun 04 '13 at 16:45

Misa Lazovic

2,805
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Parsing multiple file names(doc) in java

3 Answers3