Crystal Reports for Eclipse Designer Guide

Java User Function Libraries (UFLs)

UFLs can be programmed in a Java environment.
To create a customized function you can use custom functions or Crystal Reports user functions from a User Function Library (UFL). Custom functions are a better choice when you want to write a simple but reusable function. However, to take advantage of web services or access an external file, use a IF: UFLs operate outside of the process of the report designer. You would also use a UFL if you want to take advantage of existing Java classes.

Note: If a report is built using a User Function, the library that includes the User Function must be included in the runtime package.



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