How to check if a file retrieved from the ftp site exists in the local folder in java using talend?

I am using FtpGet to extract or retrieve a file from the ftp and loading into the database and before that i am storing in a local folder.

So before i use tfilecopy to the local Folder i would like to perform a check wherein if the file already exists in the local folder skip or ignore the next steps,if they dont exist then only write (tfilecopy) to the local folder.

So basically i want to iterate through the list of files in the local folder based on the one i am retrieving using

GlobalMap variables:dynamically and check if that file exists or not amongst the list of all the other files in that folder and perform the action.

I Have created this in talend,i could either check the database to see if the file exists or directly check the local folder where there is a copy of the ftp files(if the same file already exists) skip the process.

Only if it does not exist write to the local folder.

Which is the best approach either to scan it in the internal folders(although there maybe sub-folders as well) by writing a tjava code

Or use database script to query and only if the filename does not exist in the table,copy that file onto a target folder and write to a db table.

So primarily i am iterating through the current file from tfilelist3 and checking if they exist in tfilelist2 component using TJAVA and tfilecopy only if the file retrieved does not exist in tfilelist_2

TJAVA:

String  path =((String)globalMap.get("tFileList_2_CURRENT_FILEDIRECTORY"));

 System.out.println("PRINTING PATH in string: " +path);
 
 Path filepath=Paths.get(path);

  System.out.println("PRINTING PATH in PATH: " +filepath);
 
String  fileName =((String)globalMap.get("tFileList_3_CURRENT_FILE"));

 System.out.println("PRINTING FILENAME IN STRING: " +fileName); 
 
 File file = new File(fileName);
 System.out.println("File is " +file);
 

//File f = new File(path);
if(file.exists()) 
{
 System.out.println("Filename: "+file); //+ path.toString());
             System.out.println("Exist in location!");
 //  System.out.println("File EXIST " +f);
} else 
{
      System.out.println("Filename: "+file); //+ path.toString());
            System.out.println("Does not exist in location!");
}

I kinda made it little complex and i am lost now,would be great if someone could fix the remaining part and make it work,i cant seem to find a way through this maze now !
I had tried different versions and none of the seem to produce the result that i am looking for?

So file.exists() only checks for the specific file in the current directory,so what if i need to check in a different directory,how do i pass the arguments?

Approach 2 :

You can create a java routine eg:

findFile("fileName","FilePath")

Invoke the routine for each file by passing the fileName and filePath as parameters.

Did you check tFileExist component ? It seems that it could be useful (only parameter is folder+filename you want to check ).