Java listFiles in directory in jar

Question

Is there any way to use listFiles() on a directory that\'s been packaged into a jar?

Let\'s say I have a directory in my resource directory with some te

Answer 1

No. java.io.File can only be used to list real directories.

However, you can treat it as a java.nio.file.Path.

Overall, you have three options:

1. Open the .jar as a Zip File System and use Files.newDirectoryStream or Files.list.
2. Iterate through all entries in the .jar file, looking for names that match.
3. Put a text file in your .jar that contains the names of all the entries in the directory, so you don't have to try to list them.