File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes I/O and Streams and the fly likes performance issue Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


JavaRanch » Java Forums » Java » I/O and Streams
Bookmark "performance issue" Watch "performance issue" New topic
Author

performance issue

khaled hanafy
Greenhorn

Joined: Jun 28, 2010
Posts: 25

Hi Guys ,

i made an applicatiom that read from txt file "which contain approximatly 4500 rows" and made processing on each row and then print the results in Excell using POI API , but it's very slow it takes 30 minutes !!

is there any recommendation or design pattern should i know to increase the application's performance ?
John Jai
Bartender

Joined: May 31, 2011
Posts: 1776
Are you doing reading of the text files and then writing into Excel concurrently?

Then, try read the text file line by line - process it and store the data in a custom helper class object.

Finally after processing write the helper object information into the excel sheet.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: performance issue