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 ?
posted 4 years ago
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.