How can I get PDFTextStripper to extract text row by row?

Here is an excerpt of the input (PDF):

Here is my code:

    public static String pdfPageToText(
        PDDocument docIn,
        int pageNumber
    ) {
        String pageText = "";
        try {
            PDFTextStripper stripper = new PDFTextStripper( );
            stripper.setStartPage( pageNumber );
            stripper.setEndPage( pageNumber );
            pageText = stripper.getText( docIn );
        } catch ( Exception e ) {
            LOGGER.severe( e.getMessage( ) );
        }
        return pageText;
    }

The extracted text looks like this:

I would expect it to be more like this:

Please point me in the right direction. Thank you.