Thanks guys, I have a lot to learn and I thought it was something more complicated than that.. sorry for the confusion.. Thanks!
On Tue, Nov 10, 2015 at 10:42 PM, Nasir Rasul <[email protected]> wrote: > Hi Ronald, > Don't feel bad. We all started somewhere, some time ago. I've made plenty > of mistakes myself. > > The objective of my answer was to illuminate the problem. > > Error told you about line and null pointer exception. On that line, you had > >File f = new File(pdfFile); > > So, you would need to check pdfFile, if it has been assigned a value or > not. > > That is how one would go on debugging these errors. Usually, you just need > to look in the stack trace for clues. > > Hope it helps, and good luck. > > Feel free to use all channels available to you. There are plenty of kind > strangers willing to help. Don't let comments dissuade you from learning. > > Cheers > Nasir > > - Nasir > > On Tue, Nov 10, 2015 at 10:17 PM, Tilman Hausherr <[email protected]> > wrote: > > > Am 11.11.2015 um 06:37 schrieb Nasir Rasul: > > > >> Hi Ronald, > >> > >> You are declaring > >> > >>> private static final String pdfFile = null; > >>> > >> Subsequently, > >> > >>> File f = new File(pdfFile); > >>> > >> In between you need to initialize pdfFile with a value. At this point, > >> pdfFile is null. It has never been assigned a value > >> > > > > > > do this: > > > > private static final String pdfFile = "C:/your > > directory/name-of-your-file.pdf"; > > > > You are this guy, are you? > > > > > https://stackoverflow.com/questions/33575548/pdfbox-image-rotation-from-90-to-0 > > > > I wrote a comment there... this is not to put you down. You should > really > > learn java basics first before starting with something as complex as PDF. > > > > Tilman > > > > > > > > > >> Cheers > >> Nasir > >> > >> > >> - Nasir > >> > >> On Tue, Nov 10, 2015 at 6:27 PM, Ronald DERAMUS <[email protected] > > > >> wrote: > >> > >> Hi all, > >>> I'm new to this list and to java. I was wondering if anyone has a good > >>> working example of the rotate page feature? I haven't found a good > >>> example > >>> and I am trying to rotate a whole pdf page and save it.. I have the > >>> following code but it doesn't seem to work... I'm having a hard time > >>> getting rid of the NullPointer error. > >>> > >>> Here is my code: > >>> > >>> //import java.awt.List; > >>> import java.util.List; > >>> import java.io.File; > >>> import java.io.FileInputStream; > >>> import java.io.IOException; > >>> > >>> import org.apache.pdfbox.cos.COSDocument; > >>> import org.apache.pdfbox.exceptions.COSVisitorException; > >>> import org.apache.pdfbox.pdfparser.PDFParser; > >>> import org.apache.pdfbox.pdmodel.PDDocument; > >>> import org.apache.pdfbox.pdmodel.PDPage; > >>> > >>> > >>> public class PdfRotator { > >>> > >>> > >>> private static final String pdfFile = null; > >>> > >>> public static void main(String[] args) throws IOException { > >>> > >>> PDDocument document = PDDocument.load("PDFrotatorTEST.pdf"); > >>> > >>> > >>> > >>> //public static void main(String[] args) throws Exception > { > >>> > >>> List pages = (List) document.getDocumentCatalog().getAllPages(); > >>> > >>> for (int i = 0; i < pages.size(); i++) { > >>> PDPage page = (PDPage) ((java.util.List) pages).get(i);// > >>> PDPage > >>> page = (PDPage) pages.get(i); > >>> if ((i + 1) % 2 == 0) { > >>> page.setRotation(0); > >>> } > >>> } > >>> > >>> File f = new File(pdfFile);// File f = new File(pdfFile); > >>> String newFile = f.getParent() + File.separator + "out.pdf"; > >>> try { > >>> document.save(newFile); > >>> } catch (COSVisitorException e) { > >>> // TODO Auto-generated catch block > >>> e.printStackTrace(); > >>> } > >>> document.close(); > >>> } > >>> } > >>> > >>> Errors: > >>> Exception in thread "main" java.lang.NullPointerException > >>> at java.io.File.<init>(Unknown Source) > >>> at PdfRotator.main(PdfRotator.java:36) > >>> > >>> > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > >
