java.lang.UnsupportedClassVersionError

[bbq]

I'm working with an application in java3d, the code is compiled by JBuilder 9 and the libraries are:

j2re 1.4.2_13/java3d-utils-src.jar
j2re 1.4.2_13/jre/lib/ext/j3daudio.jar
j2re 1.4.2_13/jre/lib/ext/j3dcore.jar
j2re 1.4.2_13/jre/lib/ext/j3dutils.jar
j2re 1.4.2_13/jre/lib/ext/vecmath.jar
I installed  "J2re 1.4.2_13" de java and  "java3d 1.3".

When I try to execute it and this error appears:

java.lang.UnsupportedClassVersionError: javax/media/j3d/Node (Unsupported major.minor version 49.0)

what's happening?

[Heather]

Try with uninstall all java version and re-install J2re 1.4.2_13 and java3d 1.3. version
And add the route of the J2re 1.4.2_13 in the PATH