WebLogic ships with a full set of samples and example applications. If you installed the samples, then most of the ejb20 samples are located to $BEA_HOME/weblogic81/samples/server/examples/src/examples/ejb20. You can compile the source code and play with the samples provided. You can also run some sample domains that have some tutorials. You can find them here: $BEA_HOME/weblogic81/samples/domains. You might try running the examples domain first. Regards.
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