Cr & Java

Good Night to everyone, i'am a new user and need some patient developer that would help me.

I have a report designed with CR2008 that works fine, now i'm developing a Java application with Netbeans 6.8.

Now i'm looking for an example of how implements a Report Viewer in my application to visualize my rpt.

Ive found something but nothing of really clear and i have not found in none of the JAR that download from "CR Runtime for Java Application" the class com.crystaldecisions.reports.sdk

Please is there someone that want to help me?

Thanks in advance