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[jsf] JSF rendered multiple combined conditions

I need to give condition like

 if((a == 12 and b == 13) or(a == 12 and b == 15))

in JSF rendered attribute.

Can anyone help?

This question is related to jsf rendered-attribute

The answer is

Assuming that "a" and "b" are bean properties

rendered="#{bean.a==12 and (bean.b==13 or bean.b==15)}"

You may look at JSF EL operators

Source: Stackoverflow.com

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