What is a NameSpace in BeanShell?

A NameSpace is BeanShell's internal representation of a scope - it holds the variables and methods that are currently defined and accessible at a given point in a script's execution.

Namespaces can be nested, similar to how Java's block and method scoping works, with an inner namespace typically able to see variables from its enclosing (parent) namespace unless a variable with the same name is redeclared locally, shadowing the outer one.

This is the underlying mechanism that makes BeanShell closures work: a scripted method's closure captures a reference to the NameSpace it was defined in, which is what lets it continue to access that scope's variables even when called from elsewhere.

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