how do i stretch a row when data overflows the band height in jasper reports, I have set the stretch with overflow flag as true but it doesn't work.
I ran into this problem myself. I could not get the detail band to stretch, even though the text field in the band was configured to do so. The problem was with the report's Print Order property, which for some reason had been set to horizontal. When I changed it to vertical, the problem went away.
According to the JasperReports Ultimate Guide,
When filling report templates horizontally, dynamic text fields inside the detail section no longer stretch to their entire text content, because this might cause misalignment on the horizontal axis of subsequent detail sections.