XSSFWorkbook takes a lot of time to load

Question

I am using the following code:

File file = new File(\"abc.xlsx\");
InputStream st = new FileInputStream(file);
XSSFWorkbook wb = new XSSFWorkbook(st);
         


        

Answer 1

Consider using the Streaming version of POI. This will load a subset of the file into memory as needed. It is the recommended method when dealing with large files.

POI SXSSF