Java+PDFBox.jarでPDFをページ分割する

public class PdfPageSplit {

    /**
     * PDFページをPDFのまま分割できるか？
     * 
     * @param args
     */
    public static void main(String[] args) {

        // https://pdfbox.apache.org/download.cgi
        // pdfbox-2.0.8
        // fontbox-2.0.8.jar

        String filepath = "file/pdf_ja_multipages.pdf";
        File pdfFile = new File(filepath);
        try {
            PDDocument pdDoc = PDDocument.load(pdfFile);
            int numberOfPages = pdDoc.getNumberOfPages();
            System.err.println("pdDoc.getNumberOfPages():" + numberOfPages);
            for (int n = 1; n <= numberOfPages; n++) {
                System.err.println("n:" + n);
                PDDocument doc = new PDDocument();
                PDPage page = (PDPage) pdDoc.getPage(n - 1);
                doc.addPage(page);
                File tempFile = File.createTempFile("test", "_" + n + ".pdf");
                System.err.println("tempFile:" + tempFile.getAbsolutePath());
                doc.save(tempFile);
                doc.close();
                System.err.println("saved!");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}