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

public int numberOfFiles(File srcDir) {
    int count = 0;
    File[] listFiles = srcDir.listFiles();
    for(int i = 0; i < listFiles.length; i++){
        if (listFiles[i].isDirectory()) {
            count += numberOfFiles(listFiles[i]);
        } else if (listFiles[i].isFile()) {
            count++;
        }
    }
    return count;
}

Answer 2

You have to go though all the folder recursively and find out the files

int mCount;

getTotalFiles(File dir) {
    File[] files = dir.listFiles();
    for (File file : files) {
        if (file.isDirectory()) {
            getTotalFiles(file);
        } else {
            mCount++;
        }
    }
}

Answer 3

Something I've used before, you can easily edit it to get what you want:

public class Filewalker {

    public void walk( String path ) {

        File root = new File( path );
        File[] list = root.listFiles();

        for ( File f : list ) {
            if ( f.isDirectory() ) {
                walk( f.getAbsolutePath() );
                System.out.println( "Dir:" + f.getAbsoluteFile() );
            }
            else {
                System.out.println( "File:" + f.getAbsoluteFile() );
            }
        }
    }

    public static void main(String[] args) {
        Filewalker fw = new Filewalker();
        fw.walk("c:\\" );
    }
}

Answer 4

Here's a short one all encapsulated within a single method just returning the number of files and directories within a specific directory:

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

Cheers!

Answer 5

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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Answer 6

import java.io.File;
import java.util.Scanner;

public class Test {

    public static void main(String[] args) {


     Scanner sc=new Scanner(System.in);  

     System.out.println("Enter the Path for Directory/Folder Name");  
     String Directory=sc.nextLine(); 
     System.out.println("Your Directory/folder is :"+Directory);

     File f = new File(Directory);

     int countFiles = 0;
     int countDirectory=0;
     for (File file : f.listFiles()) {
             if (file.isFile()) {
                     countFiles++;
             }
             if (file.isDirectory()) {
                     countDirectory++;
             }

     }
     System.out.println("Number of files in Directory : " + countFiles+"\nNumber of Sub-directories "+countDirectory);

    }

}