With Java Explorer, you can compile the test cases in a test scenario into a standalone console application, which is a Java class that can run independent of Java Explorer, for example from the commandline. A standalone console application calls all test methods in the main method.
You can use standalone console applications to either run test scenarios independent of Java Explorer, or to generate network traffic that can be recorded by Silk Performer. Silk Performer can generate Web BDL scripts based on such network traffic.