Converting Pdf files to tiff files - pdf

Question

I used www.jcgonzalez.com/img/0/75/libraries.zip this libraries and here is my code
public static void pdfconverter(String FILEPATH){
Document document = new Document();
try {
document.setFile(FILEPATH);
} catch (PDFException ex) {
System.out.println("Error parsing PDF document " + ex);
} catch (PDFSecurityException ex) {
System.out.println("Error encryption not supported " + ex);
} catch (FileNotFoundException ex) {
System.out.println("Error file not found " + ex);
} catch (IOException ex) {
System.out.println("Error IOException " + ex);
}
float scale = 1.0f;
float rotation = 0f;
for (int i = 0; i < document.getNumberOfPages(); i++) {
BufferedImage image = (BufferedImage) document.getPageImage(
i, GraphicsRenderingHints.PRINT, Page.BOUNDARY_CROPBOX, rotation, scale);
RenderedImage rendImage = image;
try {
System.out.println(" capturing page " + i);
File file = new File("imageCapture1_" + i + ".tif");
ImageIO.write(rendImage, "tiff", file);
} catch (IOException e) {
e.printStackTrace();
}
image.flush();
}
document.dispose();
}
But the image shows square instead of 'ş'. Any idea why?