GC overhead limit exceeded with Apache POI

Question

I have 13 .xlsx files with about 1000 rows in each of them. Now I want to merge it to one .xlsx file with one sheet. I\'m using code from here http://blog.sodhanalibrary.com

Answer 1

Try allocating more memory eg.

java -Xmx8192m

Also what you can try is to merge in one xlsx file at a time instead of loading them all at once.

You can also move this line into your for loop:

excellFile1.close();

So you close it right away.