You can add objects to your report by using the
report designer's actions, or you can use the drag-and-drop (DnD) feature. The
DnD feature lets you drag objects from the project workspace and drop them onto
the report. The types of objects that you can drag onto a report include
images, Java classes, and other reports.
When you drag a Java class onto a report, it becomes
a POJO data source. When you drag another report onto your main report, it
becomes a subreport.
Note:
When you try to add a report that already contains a subreport, its
subreport will be discarded. You cannot have a subreport within a subreport.
You can only drag-and-drop objects that are
supported by Crystal Reports.