This is for *.xls excel format (excel before 2007). For *.xlsx (Excel after 2007), use org.jberet.support.io.ExcelStreamingItemReader (see issue JBERET-79)

POI eventmodel is low-level API, suitable for streaming large Excel files. Since it's push style streaming, so need to somehow fit it into the pull-style item reading in batch.

Apache POI Event API (HSSF Only)