Question

write a java code segment that will return the number of files founds inside the directory "d:/windows" iff the named directory does indeed exists

Answer 1

public class Main {

public static void main(String[] args) throws IOException {

System.out.println(getFilesCount(Paths.get("d:/windows")));

}

public static int getFilesCount(Path dir) throws IOException {

int countFiles = 0;

if(Files.isDirectory(dir)) {

try(DirectoryStream<Path> files = Files.newDirectoryStream(dir)) {

for(Path file : files) {

if(Files.isRegularFile(file) || Files.isSymbolicLink(file)) {

countFiles++;

}

}

}

}

else

throw new NotDirectoryException(dir + " is not directory");

return countFiles;

}

}