DirList example in java program using file handling

import java.io.*;

class DirList {

      public static void main(String args[]) {

      String dirname="/subha";

      File f1=new File(dirname);

        if(f1.isDirectory()) {

            System.out.println("Directory of " + dirname);

            String s[]=f1.list();

            for(int i=0;i<s.length;i++)

            {

                    File f=new File(dirname + "/" +s[i]);

                    if(f.isDirectory()) {

                            System.out.println(s[i] + " is a Directory");

                    }

            else

             {

                            System.out.println(s[i] + " is a File");

              }

                    }

       }

      else

            {

                         System.out.println(dirname + " is not a directory");

             }

       }

}