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Yup, that's the other way to do it. When invoking a procedure that expects an object of a specific class, you can pass an object of that class OR ANY SUBCLASS. The Java runtime performs the type checking. If you attempt to pass an object that is not a subclass of the required class, you will get an error. I wasn't sure what you were trying to do because I didn't see the code that was actually trying to use the prototype. In the future, it's probably a good idea to include that part of your code for these types of questions. Joe > From: Larry Ducie > > I have solved my casting problem - the casting is implied by the > prototypes used. > > Although the prototype definition requires a Source and Result object, I > actually pass a StreamSource and StreamResult object. > > Or Am I correct..? It it really a case that the RPG program actually has > an > "object" reference and the "object" is always passed. It is up to the java > runtime to check whether there is a type mismatch?
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