You could stream the content directly and thus avoid generating the file altogether. Or you implement a periodic cleanup process (Cron job)

I have to generate file during processing anyway

yes, there are things which I wanted to avoid

just wanted to do something after response complete

so remove file in this case

Why do you need to create the file on the disk when it's only purpose is to be sent over the wire?

because I am using converter to PDF and later another library to rotate pages ….. generally generating PDF when you have to care about each 1mm is so bad in Java

so I use external solutions in different laguages