How to delete the contents of a directory (files and subdirectory) without deletecting the directory itself with Java NIO?

Question

I'm using the following JAVA 8 code to delete a directory and its contents (files, subdirectories and directory). If I want to refactor the code in order to preserve the directory and erase only its content, how can I achieve this?

Path pathToBeDeleted =  Paths.get(directoryPath);
Files.walk(pathToBeDeleted)
    .sorted(Comparator.reverseOrder())
    .map(Path::toFile)
    .forEach(File::delete);

Answer 1

You need to add a filter to your stream (before the map operation):

filter(path -> !path.equals(pathToBeDeleted))

This will return a stream consisting of the directory contents only.