Java POI Excel creating new column and new rows

Question

Ok so Im iterating over a list and instead of inserting values into cells horizontally, im putting the values in the cells vertically.

It works fine for the first ti

Answer 1

On each iteration of your loop, you're recreating the rows at index 0 & 1. When you re-create these rows, you're going to blow away all of your already existing data.

Try something like this:

int k = 1;
Row myRow1 = sheet.createRow(0); //first row of the document
Row myRow2 = sheet.createRow(1);
for (List dataList: someList) {
  myRow1.createCell(k).setCellValue (dataList.getVal())); 
  myRow2.createCell(k).setCellValue (dataList.getSecVal())); 
  k++;
}