Check file extension in Java

Question

I have to import data from an Excel file to database and to do this, I would like to check the extension of the chosen file.

This is my code:

String          


        

Answer 1

== tests referentially equality. For value equality test, use .equals. Use String#equalsIgnoreCase if you want the case to be disregarded during the equality test.

Another thing: Don't reinvent the wheel, unless it's badly broken. In your case, you should be using Apache Commons' FilenameUtils#isExtension to check the extension.