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troubleshooting Question

Apache POI

Avatar of allelopath
allelopath asked on
Java
16 Comments1 Solution1702 ViewsLast Modified:
I have a memory issue using Apache POI. When creating a workbook (org.apache.poi.ss.usermodel.Workbook) like so:
Workbook workbook = WorkbookFactory.create( inputStream );

It takes much memory. For example, executing that line on an excel file that is 73mb causes memory usage to jump by about 1gb (according to the Windows Task Manager - PF Usage)

Two question
1. Why so much memory?
2. Is there a way to read an create/read row-by-row or column-by-column?