Describe the set() and get() methods for exchanging variables with BeanShell?

set(), called on an Interpreter instance from host Java code, pushes a value from the host application into the script's namespace under a given variable name, making it available for the script to read or modify when it runs.

get(), called the other direction, retrieves a variable's current value out of the script's namespace and back into the host Java application, letting the host read whatever result or side effect the script produced.

Together, these two methods form the standard bridge for two-way data exchange between compiled Java code and an embedded BeanShell script, without needing the script to return its result solely through eval()'s single return value.

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