Java mapping Dynamic directory getting error as K:\Staging\LandingArea\2016\/ does not exists

Hi Experts,

I am on PI 7.31 single stack file to SFTP scenario.

I made the java code to dynamically create the target directory path based on the file name.

The target directory will be E:\Staging\LandingArea\2016\

Code logic:

String targetDir= "E:\\Staging\\LandingArea";

filename = filename.substring(9,13);

  subDir = filename;

targetDir = targetDir + "\\" + subDir + "\\";

in receiver channel I am getting error as "Message processing failed. Cause: javax.resource.ResourceException: java.lang.Exception: K:\Staging\LandingArea\2016\/ does not exists.

extra "/ " is adding at the end.

Can you please help me to resolve the issue.

Thanks,

Akhila.A