Image is corrupted

[Matthias Brendel]

The following example demonstrates that the contentStream conflicts with  
the image. The more elementes are written to the content stream the more  
the image shows garbage.
Other people are having the same problem, please see  
http://stackoverflow.com/a/8598054/628696

        PDDocument document = new PDDocument();
        
        PDPage page = new PDPage(PDPage.PAGE_SIZE_A4);
        document.addPage(page);
	PDPageContentStream contentStream = new PDPageContentStream(document,  
page);
        
	for (int i = 0; i < 1000; ++i) { // the more elements the more the image  
damages
                contentStream.drawLine(0, 0, 100, 0);
        }
        
	BufferedImage bufferedImage = new BufferedImage(100, 100,  
BufferedImage.TYPE_INT_RGB);
        PDXObjectImage xObjectImage =  new PDPixelMap(document, bufferedImage);
        contentStream.drawImage(xObjectImage, 0, 0);
        
        contentStream.close();
        document.save("Example.pdf");
        document.close();