Question

I have previously written a code where I have added a time stamp to a file once it has been save in a directory.
Now I wanna to be able to truncate the time stamp from the file which comes after the extension .txt
note that my time stamp format is:_yyyy-mm-dd.

Answer 1

If you have the date after your extension in the form _yyyy-mm-dd just can use

String strippedFileName = fileName.substring(0, fileName.length() - 11);

or a bit nicer

String dateFormatString = "_yyyy-mm-dd";
String strippedFileName = fileName.substring(0, fileName.length() - dateFormatString.length());