How to use myJavaClass as myVariable in Jasper?

[itworker]

I have create in Report variable with type of 'myJavaClass' (eg: 'Value Class Name' -> de.testlib.jasper.myJavaClass).

The JavaClass with the name 'myJavaClass.java' I created before: This JavaClass has getter and setter for Java variables. I need myJavaClass.java for manipulate the values I get from Jasper.

In next step I want to use this JavaClass as variable in Jasper as variable.

But I have a big problem how to define expresions (Initial Value Expression, Increment type, Incrementer Factory Class Name).

A) Initial Value Expression: 'new myJavaClass()'

B) Expression: '$V{myJavaClass}.add(3)'

In the groupefooter I have a field to get the value of '$V{myJavaClass}' with '$V{myJavaClass}.getData()'

When I start the Report I get the Exception with message, that it is not possible to set value in the JavaClass.

 

Why isn't possible to set value to myJavaClass with Jasper? I thing it should be possible, but how?

I'm looking for any ideas...

-itworker-

[Balraj]

Initial Value Expression: this should be default value which you want to pass to your java class

IncrementType: this should be your group(as you are using this variable in group footer)

Incrementer Factory Class Name: I've not worked on this yet.

Regards,

JasperExplorer