Using a Java class

How does it reacts if you use new versions of libraries that have dependencies on the jre envirionment?

Ex. Cf9 contained the old jasper reports embedded, if you overloaded them they collide

so if you are using a new version of jasper reports, load the libs and create the net.sf.jasperreports.engine.util.JRLoader; object,

will it be the one from my jar or the one from coldfusion? so do they run in an independent "classpath container"?