How to create txt file in source package folder sub folder ( source package -> invoice)

I need to create a .txt file in the invoices folder. I am using Windows 10. How can I do that? I’ve tried:

File myObj = new File("\invoice\filename.txt");

and

File myObj = new File("/invoice/filename.txt");

But it did not work. Thank you for your support.

Answer

As Jens said do not use a project source folder to write the file. At run-time of the standalone application there might not be a folder invoice, and also you might risk compiling a garbage file into the application jar.

The user’s home directory is System.getProperty("user.home") and work from there on. That is the appropriate directory tree for user specific files.