Count number of rows where a field is a specific value

Question

How do I count how many rows there are where the address field is null (or any other value), and then print the total in the Summary band?

I\'ve tri

Answer 1

Add a variable with these properties:

Variable class : java.lang.Integer
Caculation : Sum
Reset Type : Report
Increment type : Group
Increment group : YourGroupName
Variable expression : $F{yourField}.equals("") ? 0 : 1