PDF page cannot be counted

Question

hi,
i have a problem while counting the pages for a PDF file.
Note:
The pdf file size is more than 1.5 GB. if the pdf size with in 1 MB then there is no problem, if it's size is 1.5 GB then only we are getting following error.
Error message :
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
import java.io.File;  
import java.io.FileInputStream;
import com.lowagie.text.pdf.PdfReader;  
public class CreateIndexFiles1 {  
public static void main(String[] args) {  
File f = new File("C:\\xxx\\yyyy\\");  
File listOfFile[] = f.listFiles();  
for(int i = 0; i < listOfFile.length; i++) {  
File tempFile = listOfFile;
String fileName = tempFile.getName();
System.out.println("File Name = " + fileName);
try {  
if(fileName.toLowerCase().indexOf(".pdf") != -1) {  
//PdfReader document = new PdfReader(fileName);
//int noPages = document.getNumberOfPages();
     //File pdffile =new File(f + fileName);
PdfReader document = new PdfReader(new FileInputStream(listOfFile[i]));
int noPages = document.getNumberOfPages();
System.out.println("Number of Pages in the PDF document = " + noPages);
catch(Exception e) {  
System.out.println("Exception : " + e.getMessage());
e.printStackTrace();
Can any one please give some suggestion to over come this problem?

Answer 1

I believe that iText reads and stores the complete PDF in memory when you get a page count. You will need to give the application 1.5GB (plus a little for overhead) or use a different PDF lib.