get number of files in a directory and its subdirectories

Question

using this code

new File(\"/mnt/sdcard/folder\").listFiles().length

returns a sum of folders and files in a particular directory without ca

Answer 1

http://www.java2s.com/Code/Java/File-Input-Output/Countfilesinadirectoryincludingfilesinallsubdirectories.htm

public static int countFilesInDirectory(File directory) {
  int count = 0;
  for (File file : directory.listFiles()) {
      if (file.isFile()) {
          count++;
      }
      if (file.isDirectory()) {
          count += countFilesInDirectory(file);
      }
  }
  return count;
}

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