CODEWITHSUNDEEP
javafile
user1015388
user1015388

Reputation: 1515

How to get folder name and filename using Files.walk

I have a scenario where I need to get the folder name and filename using Files.walk simultaneously.

Below is the directory: c:\files\foldername1\filename1.txt c:\files\foldername2\filename2.txt

Following code gives output which are file names

c:\\files\foldername1\\filename1.txt
c:\\files\foldername2\\filename2.txt

try (Stream<Path> walk = Files.walk(Paths.get("c:\\files"))) {
List<String> result = walk.filter(Files::isRegularFile)
          .map(x -> x.toString()).collect(Collectors.toList());
}

Following code gives output which is directories

c:\\files\foldername1
c:\\files\foldername2

    try (Stream<Path> walk = Files.walk(Paths.get("c:\\files"))) {

        List<String> result = walk.filter(Files::isDirectory)
                .map(x -> x.toString()).collect(Collectors.toList());

        result.forEach(System.out::println);
}

Is there a way to get folder name and file name using one filter at the same time.

Upvotes: 0

Views: 1186

Answers (1)

gthanop
gthanop

Reputation: 3366

This:

Map<Path, List<Path>> files = walk.filter(Files::isRegularFile).collect(Collectors.groupingBy(Path::getParent))

will give you a Map of Lists to Paths. The keys of the map will be the parent directory paths. The values of the map will be lists of all the files which are included in the directory which corresponds to the key of the map entry.

Upvotes: 2

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