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Hi,<br />
<br />
I was reading as<br />
<br />
java is single dispatch language.<br />
polymorphism works on method calls but not on method parameters<br />
<br />
<br />
onMessage() of MDB takes Message as parameter where no compile time check happens.<br />
onMessage() needs cast to Message to sub interface or impl to process message.<br />
<br />
<br />
I am not clear on what above statements means.<br />
Any links, sample code, resources, ideas highly appreciated. Thanks in advace
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</div>


Hi,

I was reading as

java is single dispatch language.
polymorphism works on method calls but not on method parameters


onMessage() of MDB takes Message as parameter where no compile time check happens.
onMessage() needs cast to Message to sub interface or impl to process message.


I am not clear on what above statements means.
Any links, sample code, resources, ideas highly appreciated. Thanks in advace

java polymorphism EJB MDB

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Java

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