View a PDF file with the Acrobat viewer JavaBean API

Fortunately, Acrobat has developed a API to view a PDF document in Java. Acrobat viewer allows you to open and print PDF files from a Java application, JavaBean or Java applets. In this tutorial, we're going to integrate Acrobat viewer into our application made with JFrame.

The api Acrobat viewer is available in http://www.java2s.com/Code/JarDownload/acrobat/acrobat-1.1.jar.zip. Download it and extract the Acrobat.jar file into your project, then import the library into your Eclipse IDE or Netbeans.

Now, how do you open a PDF file? The Java Beans API provides simple-to-follow and easy-to-view steps to view a PDF document in the Java application. Here are the steps for creating the PDF reader:

Create the JFrame whose Acrobat viewer will be added;
Create Viewer object(a class of java.awt.Component) to view the PDF and add it to JFrame:

Viewer viewer = new Viewer();
frame.add(viewer, BorderLayout.CENTER);

Select Document

FileInputStream fis = new FileInputStream(filename);

Define FileInputStream as an argument in viewer:

viewer.setDocumentInputStream(fis);

Create the layout that makes the document appear:

viewer.activate();

The file path can also be indicated by the method:

setDocumentURL(java.lang.String url)

Example:

import java.awt.BorderLayout; 
import java.io.FileInputStream; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import com.adobe.acrobat.Viewer; 
/*
 * www.codeurjava.com
 */
public class readerPDF extends JPanel{

 private Viewer viewer; 
 
 public readerPDF(String, filename) throws Exception{
 this.setLayout(new BorderLayout()); 
 
 //create the viewer that will be used to display the content of the pdf
 viewer = new Viewer(); 
 this.add(viewer, BorderLayout.CENTER); 
 FileInputStream fis = new FileInputStream(filename); 
 viewer.setDocumentInputStream(fis); 
 viewer.activate(); 
 }
 
 public static void main(String[] args) throws Exception {
 
 String filename = "delphi.pdf"; 
 readerPDF reader = new readerPDF(filename); 
 //create the JFrame
 JFrame f = new JFrame("PDF Reader"); 
 f.setSize(1024,768); 
 f.setLocationRelativeTo(null); 
 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
 f.setVisible(true); 
 f.getContentPane().add(drive); 
 }
}

View a PDF file in java with acrobat viewer

Retrieve page count and current page

Page number and current page are obtained with the following methods: getPageCount() and getCurrentPage(). For example, we want to display the total number of pages and the number of the current page:

System.out.println("Number of pages: "+viewer.getPageCount()); 
System.out.println("Current page: "+viewer.getCurrentPage());

Page Count: 50
Current Page: 0

Change Zoom

To adjust the zoom level of the current page, use the zoomTo(double). The 100% zoom corresponds to 1.0 in the method zoomTo().

viewer.zoomTo(0.5);

Get PDF Title in Java

The title is obtained with the getTitle()

PDFBookmark bookmark=viewer.getRootBookmark(); 
String title=bookmark.getTitle();

Reference

Java.net: Accessing a PDF Document with the Acrobat Viewer JavaBean