How to insert a row between two rows in an existing excel with HSSF (Apache POI)

Question

Somehow I manage to create new rows between two rows in an existing excel file. The problem is, some of the formatting were not include along the shifting of the rows.

Answer 1

I've implemented this in Kotlin like this:

fun Sheet.buildRow ( rowNum:Int ) : Row {
    val templateRow = this.getRow( rowNum )
    this.shiftRows( rowNum+1, sheet.lastRowNum, 1 )
    val newRow = this.createRow( rowNum+1 )
    templateRow.cellIterator().forEach {
        newRow.createCell( it.columnIndex ).cellStyle = it.cellStyle
    }
    return templateRow
}

It doesn't copy the cell values, just the format. Should be applicable to Java as well.