(Without including any external libraries.)
What's the most efficient way to remove the extension of a filename in Java, without assuming anything of the filename?
Some examples and expected results:
- folder > folder
- hello.txt > hello
- read.me > read
- hello.bkp.txt > hello.bkp
- weird..name > weird.
- .hidden > .hidden
(or should the last one be just hidden?)
Edit: The original question assumed that the input is a filename (not a file path). Since some answers are talking about file paths, such functions should also work in cases like:
- rare.folder/hello > rare.folder/hello
This particular case is handled very well by Sylvain M's answer.