Fórum Abrir um arquivo pdf em java #566918

Runtime.getRuntime().exec(//aki vc digita o codigo que voce usaria no prompot);

package pdfpaneltest;

import com.sun.pdfview.PDFFile;
import com.sun.pdfview.PDFPage;
import com.sun.pdfview.PagePanel;
import java.io.*;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import javax.swing.*;

/**
 * An example of using the PagePanel class to show PDFs. For more advanced
 * usage including navigation and zooming, look ad the 
 * com.sun.pdfview.PDFViewer class.
 *
 * @author joshua.marinacci@sun.com
 */
public class Main {

    public static void setup() throws IOException {
    
        //set up the frame and panel
        JFrame frame = new JFrame("PDF Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        PagePanel panel = new PagePanel();
        frame.add(panel);
        frame.pack();
        frame.setVisible(true);

        //load a pdf from a byte buffer
        File file = new File("test.pdf");
        RandomAccessFile raf = new RandomAccessFile(file, "r");
        FileChannel channel = raf.getChannel();
        ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY,
            0, channel.size());
        PDFFile pdffile = new PDFFile(buf);

        // show the first page
        PDFPage page = pdffile.getPage(0);
        panel.showPage(page);
        
    }

    public static void main(final String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                try {
                    Main.setup();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
        });
    }
}

File pdf = new File("arquivo.pdf");
try {
  Desktop.getDesktop().open(pdf);
} catch(Exception ex) {
  ex.printStackTrace();
  JOptionPane.showMessageDialog(null, "Erro no Desktop: " + ex);
}

String caminho = txtSalvoem.getText();
        File arquivo = new File(caminho);
        try {
            Desktop.getDesktop().open(arquivo);
        } catch (Exception ex) {
            ex.printStackTrace();
            JOptionPane.showMessageDialog(null, ex,  "ERRO",JOptionPane.ERROR_MESSAGE);

        }

JFileChooser arquivo = new JFileChooser();//instancia da classe JFileChooser
        String caminhoArquivo = "";
        int retorno = arquivo.showOpenDialog(null);//variavel recebendo o caminho escolhido por vc
        if (retorno == JFileChooser.APPROVE_OPTION) {
            caminhoArquivo = arquivo.getSelectedFile().getAbsolutePath();
            txtSalvoem.setText("" + caminhoArquivo);//campo recebendo o caminho do arquivo
        } else {
//não abriu
        }

String caminho = txtSalvoem.getText();
        File arquivo = new File(caminho);
        try {
            Desktop.getDesktop().open(arquivo);
        } catch (Exception ex) {
            ex.printStackTrace();
            JOptionPane.showMessageDialog(null, ex,  "ERRO",JOptionPane.ERROR_MESSAGE);

        }