How to get the list of pdf files of "Download" directory of the device in android 12?

Question

It shows other files like .jpg, .png, folders, .mp3 files but it doesn't show the .pdf, .doc files in the directory.

File Downloadpath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS.toString());

        String[] files = Downloadpath.list();

        Log.d("pdf", Arrays.toString(files));
        Log.d("pdf", "size:"+files.length);
        
        for(int k=0;k<files.length;k++){
            Log.d("pdf", "size:"+files[k]);
        }

How can I list the pdf files of Download folder in Android 12? I have tried this link but it does not work in Android 12.