DevOps / Apache Groovy Interview questions
What happens when methodMissing is invoked in Groovy?
methodMissing is a special method you can implement on a class that Groovy's dynamic dispatch calls automatically when code invokes a method that doesn't actually exist on that object - instead of immediately throwing a MissingMethodException, Groovy gives the class a chance to handle the call itself.
Inside methodMissing, you receive the attempted method's name and its arguments, and can implement any custom logic - like dynamically generating a result, delegating to another object, or logging the unknown call - before returning a value as if the method had really existed.
This is a common technique for building expressive DSLs and proxy-like objects, where the exact set of "methods" that can be called isn't fixed in advance but is instead computed or interpreted dynamically based on the method name itself.
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