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Recursive File List - Help me problem solve please

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Re: Recursive File List - Help me problem solve please

#11

Jan 12th, 2009

> but i dont think it has had any change in the list of results brought
> to the terminal window

And what were you expecting by checking if the file size is less than or equal to one byte?

Maybe posting/uploading a virtual directory structure along with the expected output might help others in collaborating for a better solution.

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masijade

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Re: Recursive File List - Help me problem solve please

#12

Jan 12th, 2009

I'm fairly sure you meant "files.length" and not "f.length()".

Edit: Not that that matters though. Once the loop is done, the method will return anyway.

Last edited by masijade; Jan 12th, 2009 at 2:51 am.

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Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
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Re: Recursive File List - Help me problem solve please

#13

Jan 13th, 2009

hello again i tried your advice erm no difference I think

I dont quite understand how not to make "the method not return anyway"

Please may someone help me to get files of the same size listed on screen or put into an array (both if possible).

Heres what ive tried so far, (also take a look at the commented out code)

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
import java.io.*;
import java.util.*;
 
public class scanner {
 
public static void main(String[] args) {
        for(File file : File.listRoots()){ 
            search(file);
           // duplicate(file);
        }
    }
 
public static void search(File f)
{
    //if (!f.exists()) return;
   // String name = f.getName();
   // System.out.println(name);
  //  if (duplicate(f)) System.out.println(f); 
     if ( f.isDirectory() ) {
        File[] files = f.listFiles();
         //if (files.length == files.length) return; {
        for( int i = 0 ; i < files.length; i++ ) {
            if (files[i].length() == files[i].length()) {
        search( files[i] );
            //if (files[i].length() == files[i].length()) return;    
              System.out.println(files[i]);  
            } } } } 
 
 
 
//public static void duplicate(File file) 
//{
 
  //if (file.length() == file.length()) return;  
  //    }
}
import java.io.*;
import java.util.*;

public class scanner {

public static void main(String[] args) {
        for(File file : File.listRoots()){ 
            search(file);
           // duplicate(file);
        }
    }

public static void search(File f)
{
    //if (!f.exists()) return;
   // String name = f.getName();
   // System.out.println(name);
  //  if (duplicate(f)) System.out.println(f); 
     if ( f.isDirectory() ) {
        File[] files = f.listFiles();
         //if (files.length == files.length) return; {
        for( int i = 0 ; i < files.length; i++ ) {
            if (files[i].length() == files[i].length()) {
        search( files[i] );
            //if (files[i].length() == files[i].length()) return;    
              System.out.println(files[i]);  
            } } } } 
            
        

//public static void duplicate(File file) 
//{

  //if (file.length() == file.length()) return;  
  //    }
}

please please help..

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Re: Recursive File List - Help me problem solve please

#14

Jan 14th, 2009

so just to add more detail because theyre may be confusion

Im basically trying to get files with equal file size first, then im trying to put those in an array, then the files in the array need to be compared possibily by length (bytes) (not file names but files contents), the comparison need to be made maybe by binary contents or by generating an MD checksum which ever ones easier.

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Re: Recursive File List - Help me problem solve please

#15

Jan 14th, 2009

And I told you that sort of thing would be a lot more work. Good luck with that, we are not going to write it for you.

For arrays:
http://java.sun.com/docs/books/tutor...ts/arrays.html

For Collections (which would be better):
http://java.sun.com/docs/books/tutor...ons/index.html

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Re: Recursive File List - Help me problem solve please

#16

Jan 14th, 2009

•

Originally Posted by caps_lock

so just to add more detail because theyre may be confusion

Im basically trying to get files with equal file size first, then im trying to put those in an array, then the files in the array need to be compared possibily by length (bytes) (not file names but files contents), the comparison need to be made maybe by binary contents or by generating an MD checksum which ever ones easier.

Like it has already been mentioned by masijade, you have to make a stab at this and post again if you have any problems. Just putting in random conditional statements here and there won't cut in. Since you already seem to know the logic, you can at least try implementing it.

I don't accept change; I don't deserve to live.

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Re: Recursive File List - Help me problem solve please

#17

Jan 14th, 2009

i just thought you guys would of liked a challenge lol

thanks anyways

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Re: Recursive File List - Help me problem solve please

#18

Jan 14th, 2009

> i just thought you guys would of liked a challenge lol

I have got enough challenges in my daily life, I guess I'll just pass. :-)

But don't give up hope, who knows, masijade might just end up dropping in a jar file here with a "meh" look on his face. ;-)

I don't accept change; I don't deserve to live.

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Re: Recursive File List - Help me problem solve please

#19

Jan 14th, 2009

why when i compile this code now i only get a list of folders and .sqm files and .log file and a .txt file and an .exe file. Ive got this list of files from d and c drive

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
import java.io.*; 
import java.util.*;
import java.*;
 
import java.io.*;
import java.util.*;
 
public class DeleteSameFilesAttempt9x10 {
public static void main(String[] args) {
        for(File file : File.listRoots()){ 
            search(file);
        }
    }
 
 
 
    public static void search(File f) {
        if ( !f.exists() ) return; 
        String name = f.getName();
        System.out.println(name);
        if ( f.isDirectory() ) {
        File[] files = f.listFiles();
        if (files != null) {
        for( int i = 0 ; i < files.length; i++ ) {
        samesize( files[i], files[i] ); {
 
            System.out.println(files[i]);
 
        }   
 
 
 
        }
    }
 
}
}
 
public static void samesize (File filey, File filex) {
  if (filey != null) if (filex !=null)
  {
      if (filey.length() == filex.length()) return;
  String name1 = filey.getName();
  String name2 = filex.getName();
  System.out.println(name1 + name2);
            }
        }
    }
import java.io.*; 
import java.util.*;
import java.*;

import java.io.*;
import java.util.*;
 
public class DeleteSameFilesAttempt9x10 {
public static void main(String[] args) {
        for(File file : File.listRoots()){ 
            search(file);
        }
    }

   
    
    public static void search(File f) {
        if ( !f.exists() ) return; 
        String name = f.getName();
        System.out.println(name);
        if ( f.isDirectory() ) {
        File[] files = f.listFiles();
        if (files != null) {
        for( int i = 0 ; i < files.length; i++ ) {
        samesize( files[i], files[i] ); {
            
            System.out.println(files[i]);
     
        }   

     
            
        }
    }
 
}
}

public static void samesize (File filey, File filex) {
  if (filey != null) if (filex !=null)
  {
      if (filey.length() == filex.length()) return;
  String name1 = filey.getName();
  String name2 = filex.getName();
  System.out.println(name1 + name2);
            }
        }
    }

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Re: Recursive File List - Help me problem solve please

#20

Jan 14th, 2009

I don't even understand what you mean by that question. Your code is only processing the top level of each root entry and only then if it's a directory.