java - Finding the last row in an Excel spreadsheet

Question

I'm trying to find the index of the last row in an excel spreadsheet using Apache's POI for Java.

I thought this should be possible with getLastRowNum() or getPhysicalNumberOfRows() but they don't seem to give the right results. For example, I have a one line spreadsheet and these two functions return a value of 1140. Another two line spreadsheets gets a value of 1162.

The other problem is that I cannot just look for the first empty row, since it may be possible to have empty rows between rows of valid data.

So is there a way to find the index of the last row? I suppose I could make it a requirement to not have empty rows between data, but I was hoping for a better solution.

Edit: For the record using an iterator didn't help. It just iterated over the 1140/1162 supposed rows.

Answer 1

I get the expected output using poi-3.6-20091214 and a test.xls having two empty rows followed by three occupied rows:

InputStream myxls = new FileInputStream("test.xls");
Workbook book = new HSSFWorkbook(myxls);
Sheet sheet = book.getSheetAt(0);
System.out.println(sheet.getLastRowNum());

Output: 4