How to embed java code in Expression Language?

Hi,
I'm wanting to write a EL like:
rendered="#{!cardOption==1? true : false}"But I got the exception as following:
Exception:
Attempt to coerce a value of type "java.lang.Integer" to Boolean
How to correct it? Thanks for your help!
Paul

rendered="#{!cardOption==1? true : false}"It should be rendered="#{!(cardOption==1)? true : false}"or simply rendered="#{cardOption!=1}"

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