Printing pdf problem

Hi All,
I am successfully able to generate the pdf. The size of each pdf is
1mb-15MB. 
After generation I am storing it in a file on the server. I am using java
class to print the pdf. Upto 10mb its printing properly. But after that it
gives blank page. 
I am attaching the code herewith.
Can you please tell me if there is any better way to do the same. 
 
Thanks & Regards
Purvesh Vora