open a pdf file in linux

[aparna]

Hi... I want to open a pdf file in linux with java code
In windows i am using
Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + path);

In Mac
Runtime.getRuntime().exec("open /Users/source/abc.pdf");

but I didnt find any solution for Linux
Somewhere I found solution
Runtime.getRuntime().exec("open file:/home/source/abc.pdf");
But its not working and this solution is specific to KDE desktop. I want a common solution for any desktop in linux. Please help me
Thanks

[Nicholas Jordan]

PDF is proprietary, probably study Post Script, which is popular in the college cs crowd and leads to pdf eventually

[Eranga]

Did you try to find the common execution location of pdf? Because that's not related to Java anymore. May be our Linux users can help you. At the time try to search on a Linux forum as well. Sorry pal, I'm not a linux user.

[fishtoprecords]

Quote:

Originally Posted by Nicholas Jordan

PDF is proprietary

This was true, but Adobe has released the specs. So its sort of open license, and there are open source tools to read it.

But, and this is a big but, the format is complex. Most programmers prefer to not reinvent the wheel. So find some code that already does what you need.

[serjant]

Download library from here :
New: 100% Java PDF Renderer and Viewer
then create two file:

Code:

import java.awt.*;
import java.awt.geom.*;

import java.io.*;

import java.nio.*;
import java.nio.channels.*;

import javax.swing.*;

import com.sun.pdfview.*;
public class Renderer {
	
	
	private Image image;
	private String fileName;
	private PDFFile pdfFile;
	private double height;
	private double width;
	private int numpages;
	private Image[] images;
	
	public Renderer(String file,int pagenum){
		fileName=file;
		
		try{
			RandomAccessFile raf = new RandomAccessFile (new File (fileName), "r");
			FileChannel fc = raf.getChannel ();
			ByteBuffer buf = fc.map (FileChannel.MapMode.READ_ONLY, 0, fc.size ());
			pdfFile = new PDFFile (buf);
		}
		catch(IOException e){
			System.out.println("the file wasn't found");
		}
		numpages = pdfFile.getNumPages ();
		System.out.println ("Number of pages = "+numpages);
		/*if (pagenum > numpages)
			pagenum = numpages;
*/
		images=new Image[numpages];
		int counter=1;
		for(int i=0;i<images.length;i++){
			PDFPage page = pdfFile.getPage (counter);
             
			Rectangle2D r2d = page.getBBox ();

			width = r2d.getWidth ();
			height = r2d.getHeight ();
			width /= 72.0;
			height /= 72.0;
			int res = Toolkit.getDefaultToolkit ().getScreenResolution ();
			width *= res;
			height *= res;

			image = page.getImage ((int) width, (int) height, r2d, null, true, true);
			images[i]=image;
			counter++;
			
		}
		
	}
	
	
	public Image[] getImagePDFArray(){
		return this.images;
	}
	
	public Image getPDFImage(){
		return this.image;
	}
	
	public double getWidth(){
		return this.width;
	}
	
	
	
	public int getNumOfPages(){
		return this.numpages;
	}
	
	public int getHeight(){
		return (int)this.height;
	}
}

the seocnd one:

Code:

import java.awt.*;
import java.awt.geom.*;

import java.io.*;

import java.nio.*;
import java.nio.channels.*;

import javax.swing.*;

import com.sun.pdfview.*;
import java.awt.event.*;
public class PDFViewer extends JFrame
{
  // static Image image;
   
   public PDFViewer (String title)
   {
      super (title);
      setDefaultCloseOperation (EXIT_ON_CLOSE);
      pack ();
      
   }
   
   
   

   public static void main (final String [] args) throws IOException
   {

	  int pagenum=1;
      
     
      
     final Renderer rend=new Renderer(fileName,pagenum);
    
      Runnable r = new Runnable ()
                   {
    	  			int y=0;
    	  			JViewport view;
                       public void run ()
                       {
                        PDFViewer pdf=  new PDFViewer ("PDF Viewer: "+"<Your pdf file>");
                       
                    	JToolBar toolBar=new JToolBar();
              	      	
                    	JButton buttonScroll=new JButton("Next");
                	    toolBar.add(buttonScroll);
                	    toolBar.setVisible(true); 
                        JLabel[] labels=new JLabel[rend.getNumOfPages()];
                        JPanel main=new JPanel();
                        main.setLayout(new BoxLayout(main,BoxLayout.Y_AXIS));
                        for(int i=0;i<labels.length;i++){
                        	labels[i]=new JLabel(new ImageIcon (rend.getImagePDFArray()[i]));
                        	labels[i].setVerticalAlignment (JLabel.BOTTOM);
                        	main.add(labels[i]);
                        }
                        JScrollPane pane=new JScrollPane (main);
                        JSplitPane splitPane=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,toolBar,pane);
                		splitPane.setDividerSize(4);
                		view = pane.getViewport();

                		Point p = new Point(0,y);
                		view.setViewPosition(p);
                		y=rend.getHeight();
                		
                		
                		buttonScroll.addActionListener(new ActionListener(){
                			public void actionPerformed(ActionEvent e){
                				int r=0;
                				double rp=0.0;
                				rp=view.getViewPosition().getY();
                				r=(int)rp/rend.getHeight();
                				y=rend.getHeight()*r+rend.getHeight();
                				Point p = new Point(0,y);
                        		view.setViewPosition(p);
                			}
                		});
                		
                        pdf.setContentPane (splitPane);
                        pdf.setSize(800,600);
              	      
              	      
                        pdf.setVisible (true);
                       }
                   };
      EventQueue.invokeLater (r);
   }
}

Search where you have PDFViewer pdf= new PDFViewer ("PDF Viewer: "+"<Your pdf file>"); and insert your own file pdf to open