Jan 16, 2020 · A file name extension is a set of characters added to the end of a file name that determine which app should open it. By default, File Explorer hides file name extensions in Windows …

The extension is always the last element of the list created by splitting the filename by dot ., so if you reverse the filename and split by dot once, the reverse of the second element is the file name without …

Nov 23, 2019 · This will return empty for both file names end with . and file names without an extension.

Aug 26, 2010 · Since there's no standard way to get the file extension, you get dozens of half-wrong answers and slightly different implementations. Your code uses 2 methods (I would have liked to …

Jan 1, 2022 · When I try to rename a file I now get a warning pop-up windows message indicating "if you change a file name extension the file might become unusable, are you sure you want to change it?" …

Jun 8, 2009 · Here is the algorithm I used for finding the name and extension of a file when I wrote a Bash script to make names unique when names conflicted with respect to casing.

Sep 20, 2012 · 209 Way easier than I thought to address the issue of displaying the full path, directory, file name or file extension.

You should make sure the "file" isn't actually a folder before checking the extension. Some of the answers above don't account for folder names with periods. (folder.mp3 is a valid folder name).

Oct 10, 2008 · String.lastIndexOf method returns the last position of the substring (i.e. ".") in the given string (i.e. fname). If the substring is not found method returns -1. The "unacceptable" positions of …

Question is what you want with that info. Do you want to get the file extension to get the file type? That is not a good solution as it might be wrong.