Huge size of application jar

Hi experts,
I have a Java project that includes a third party tool for formatting and printing a report (JasperReports and iReport). The project was originally done back in Feb.2004 and I needed to update the tools and jars. When I made my application's jar file it went from under 800KB to over 5,800KB due to the JasperReports and IReport jar files. I looked at the jar's manifest of class files and iReport had a LOT of classes in there.
Is it possible to reduce this? I can't imagine that I need them all when I invoke three classes and three methods to do the printing (the tools do a lot more than I am using). Do I need to learn something significant about classpath and importing? Is there a tool to help with this or is there nothing to be done? Even though my problem is with these specific jars can anyone address my problem in a generic manner.
Thanks for your comments.
hopi

Sorry folks, I just checked that I asked this question here last week and got several suggestions. The replies were appreciated but as you might expect they weren't describing the lazy programmer's way out. Still, if you want to comment here go ahead, I'm listening :-)
Sorry again. Have a good one.
hopi

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