My problem is simplest what you think. I am writing two method: xlswrite(...) and xlsread(...)
The first works well while the second no. My exercise is this: *1)* To build a simple matrix: int columns = 100; int rows = 100000; Object[][] matrix = new Object[rows][columns]; for (int j = 0; j < rows; j++) { for (int k = 0; k < columns; k++) { matrix[j][k] = j - k; } } *2)* To build 2 methods with these specifications xlswrite("filename.xlsx",matrix); Object[][] matrix2 = xlsread("filename.xlsx"); *3)* It must be worth the following mathematical relationship: matrix = matrix2 I just created xlsread() and it works but it can not read filename.xlsx because it is too big file. I used your example code: public class ExampleEventUserModel {...} but it doesn't work and I can not find xercesImpl.jar! -- View this message in context: http://apache-poi.1045710.n5.nabble.com/Apache-POI-works-but-it-uses-too-RAM-is-it-a-limit-of-your-library-tp5712425p5712492.html Sent from the POI - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@poi.apache.org For additional commands, e-mail: user-h...@poi.apache.org