Delete all files in directory (but not directory) - one liner solution

Question

I want to delete all files inside ABC directory.

When I tried with FileUtils.deleteDirectory(new File(\"C:/test/ABC/\")); it also deletes folder ABC.

Answer 1

Java 8 Stream

This deletes only files from ABC (sub-directories are untouched):

Arrays.stream(new File("C:/test/ABC/").listFiles()).forEach(File::delete);

---

This deletes only files from ABC (and sub-directories):

Files.walk(Paths.get("C:/test/ABC/"))
                .filter(Files::isRegularFile)
                .map(Path::toFile)
                .forEach(File::delete);

^ This version requires handling the IOException