How to get all text files from one folder using Java?

Question

I need to read all \".txt\" files from folder (user needs to select this folder).

Please advise how to do it?

Answer 1

Assuming you already have the directory, you can do something like this:

File directory= new File("user submits directory");
for (File file : directory.listFiles())
{
   if (FileNameUtils.getExtension(file.getName()).equals("txt"))
   {
       //dom something here.
   }
}

The FileNameUtils.getExtension() can be found here.

Edit: What you seem to want to do is to access the file structure from the web browser. According to this previous SO post, what you want to do is not possible due to security reasons.