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Submitted by: M S Sridhar(sridhar.ms@gmail.com)

Friday Dec 22nd 2017 by M S Sridhar

Language: Java, Level: Intermediate: - See how to crosslink files in Java so that you don't have to hunt for multiple files when changes are made to one.

There are times when we need to reflect the changes made to a file in a different file as well. Mostly, they are made available in a common place so that you do not have to navigate to multiple folders looking for them. This idea is supported by Java using the concept of link creation.

Now, in the example below, linkedFile.txt will always reflect the changes made to source.txt:

import java.nio.file.*;
import java.io.*;

public class CreateLink{

   public static void main(String args[])
   {
      CreateLink createLink = new CreateLink();
      createLink.proceed();
   }

   private void proceed()
   {
      //The linkedFile will be linked to currentFile and will reflect any changes made to it
      Path linkedFile = Paths.get("C:\\AdvJava\\linkedFile.txt"); 
      //The file that is the origin
      Path currentFile = Paths.get("C:\\AdvJava\\source.txt");
      try {
         //Creating a link 
         Files.createLink(linkedFile, currentFile);
      } catch (IOException ioe) {
         System.out.println(ioe);
      } catch (UnsupportedOperationException uoe) {
         System.out.println(uoe);
      }
   }
   
}
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