Thread: Java program to take new files from one path and sent it do another path?

Hi Folks,

I am having some files(.txt) in a directory called as Unprocessed folder,i would like to take one by one file and send it to the processing path say it as..C:\processingfolder
Each time when an UnprocessFolder get any new file it should be sent to the processing folder.

Any Idea....thanks in advance


-jazz

Yeah...with Java Only...Rep me ASAP

Thanks

use a thread that checks for a file every 1 sec (or less) , use a file inputstream /outputstream to read/write the file and a bufferedreader/scanner etc to process the file. Shouldn't be too hard to do it depending on the "processing" requiremens it can be done in a few hours.

ok thanks for ur reply...

i can list the files but not able to load them...means i can list the files from the Folder but not able to Move them...is any new file comes no it is not able to recognize...how to do this..please rep me..

thanks

Originally Posted by jazz2k8

ok thanks for ur reply...

i can list the files but not able to load them...means i can list the files from the Folder but not able to Move them...is any new file comes no it is not able to recognize...how to do this..please rep me..

thanks

see my reply above, you can use this class i wrote to copy files from one directory to another: Engineeringserver.com | Copy a txt file from one location to another with Java

to process it automatcally you can use a thread that checks the unprocessed folder every second and call the method in my class to process the file or move the file to another directory.

Originally Posted by JavaPF

Hey Jazz,

Here is a crude example for you. You will have to edit the code to check dir1 every minute or put it into a loop or something.

Currently this will take the text files from dir1 and re-create them into dir2.

You will also need to add code to delete the files from dir1 after creation.

import java.io.File;
import java.io.*;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
 
public class ListFiles 
{ 
 public static String path1;
 public static String path2;
 public static String files;
 public static String fileName;
 
 public static void main(String[] args) throws Exception
{
   path1 = "/dir1/"; 
   path2 = "/dir2/";
 
  File folder = new File(path1);
  File[] listOfFiles = folder.listFiles(); 
  for (int i = 0; i < listOfFiles.length; i++) 
  {
 
   if (listOfFiles[i].isFile()) 
   {
   files = listOfFiles[i].getName();
       if (files.endsWith(".txt") || files.endsWith(".TXT"))
       {
 
          System.out.println(files);
 
          try
          {
          FileInputStream in = new FileInputStream(path1 + files);
          BufferedReader br = new BufferedReader(new InputStreamReader(in));
          String strLine;
 
     Writer output;
     File file1 = new File(path2 + files);
     String newline = System.getProperty("line.separator"); 
     output = new BufferedWriter(new FileWriter(file1));
 
          while((strLine = br.readLine())!= null)
          {
           //Write contents of text file
           output.write(strLine);
           output.write(newline);
          //System.out.println(strLine);
          }
 
           output.close();
 
          }catch(Exception e){
           System.out.println(e);
          }
 
        }
       }
  }
}
}

Let me know if you get stuck and ill try to finish this off. I'm away from the computer now though so thought id post this quickly.

Looks good, add a thread so that it checks for a new file and process it. Not that hard to code

Thanks alot....will let you know after completing this

Can we try with images....i.e. i need to upload .tif image.....:-)

Originally Posted by JavaPF

I'm not sure how to go about doing this with images.

The code above looks for all the .txt files in a dir, opens them 1 by 1 and re-creates them in the new directory. This wouldnt work with .tif images.

You can still use the above code to list all the images in a directory. Ill have a think about how to move these files and get back to you..

It could work if you can read the encoding for tiff images: Java Advanced Imaging API Home Page

It's not that hard to implements it by the looks of it. (though i havent done anything with image manipulating yet, but this can be a good time to try out)