How to display PDF file using PDFBox in JPanel?
I've already created a JForm in netbeans that can read PDF using PDFBox. But the problem is that I was using PDPage.convertToImage () method which is really very slow. Can anyone help me to display PDF with PDFBox in JPanel with faster speed?
The code I wrote is inside the ActionListener for the JButton.
File f = null;
ArrayList<JLabel> jl = new ArrayList<JLabel>();
BufferedImage bi = null;
JFileChooser fc = new JFileChooser();
int x=fc.showOpenDialog(null);
if(x==JFileChooser.APPROVE_OPTION)
{
f=fc.getSelectedFile();
}
PDDocument doc=null;
try {
doc = PDDocument.load(f);
} catch (IOException ex) {
JOptionPane.showMessageDialog(null, "not done\n"+ex);
}
List pages = doc.getDocumentCatalog().getAllPages();
Iterator itr = pages.iterator();
int q=0;
while(itr.hasNext())
{
PDPage page = (PDPage)itr.next();
try
{
bi = page.convertToImage();
q++;
jl.add(new JLabel(new ImageIcon(bi)));
}catch(Exception e)
{
JOptionPane.showMessageDialog(null, e);
}
}
itr = jl.iterator();
while(itr.hasNext())
{
viewPanel.setVisible(false);
viewPanel.add((JLabel)itr.next());
viewPanel.setVisible(true);
}
JOptionPane.showMessageDialog(null, "done");
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1 answer
NetBeans has several plugins for displaying PDF files
http://plugins.netbeans.org/plugin/5809/java-pdf-reader http://plugins.netbeans.org/plugin/11676/netbeans-pdfviewer http://plugins.netbeans.org/plugin/17/ pdf-viewer-javafx-converter-and-bookmarking-application
Have you tried any of them?
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