How can I show sum of columns in column header? [closed]

Answer 1

Using the normal detail band and columnHeader band this is achieved by creating a variable with calculationType="sum" on the field you like to sum

See: How to sum all values in a column in Jaspersoft iReport Designer?

Then display the variable using a textField in the columnHeader band, setting evaluationTime="Report" so that variable is calculated before displaying it.

To rotate a textElement vertical use the rotation attribute (rotation="Left")

Example:

Result (with some arbitrary data)