How to convert a , separated String to a table layout?

Question

I have a field with values:

CM45024,CM45025,CM45026

I want to separate this into multiple items using subreport. My jrxml source is:

Answer 1

This is how it can be achieved using subreport, assuming that your $F{docIdNoGRN} contains the String "CM45024,CM45025,CM45026"

1. Generate the data source that will be passed to the subreport

As you can see I split(",") your field String getting an Array that is converted to List and then passed in a JRBeanCollectionDataSource

2. Setup the subreport, the trick to reference our String is using _THIS as field value

example: (your_subreport.jrxml):

I have added the $V{REPORT_COUNT} to achieve the numbers (1,2,3) .

The output will be

1 CM45024
2 CM45025
3 CM45026

Note: You can also use the jr:table component to achieve this if you like to avoid generating a subreport (just define the table datasource as above)