Find out Zero Byte Files

import java.io.*;
import java.util.*;

import java.util.zip.*;

public class FindZeroByteFiles {
    public FindZeroByteFiles() {
    }

    public static void main(String[] args) {
        FindZeroByteFiles findZeroByteFiles = new FindZeroByteFiles();
        File f1 = new File(args[0]);
  traverse(f1);
    }
    public static void traverse(File f) {
          String s1 = f.getAbsolutePath();

if (f.isFile())
         {
            long i =  filesize(s1)    ;
            if (i==0 ) {
                System.out.println(s1);
            }
         }

          if (f.isDirectory()) {
            String[] children = f.list();
            for (int i=0; i<children.length; i++) {
              traverse(new File(f, children[i]));
            }
          }
        }

    public static long  filesize(String filename)  {
        long  i = 0;
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
            File f = new File(filename);
          if(f.exists()){
           long file_size = f.length();
            //  System.out.println("Size of the file : " + file_size);
               i = file_size;
           }
      return i;
    }
}

Run this program with the following arguments.

java  -client -classpath C:\ravi FindZeroByteFiles d:\Test