How can I express hex strings from numbers?

Question

I'm trying to display a decimal number and hexadecimal number from a sam evalue.

I tried

<h:outputText value="#{service.onid} (#{Integer.toHexString(service.onid)})" />

The the out is

123 ()

So printing this in a class with a 'main' ? – Kukeltje Nov 14 '16 at 08:30 — Kukeltje, Nov 14 '16 at 08:30

score 0 · Accepted Answer · edited May 23 '17 at 12:07

Using the syntax #{Integer.toHexString(...)} implies that there is a backing bean named Integer available that has a method called toHexString.

See Difference between JSP EL, JSF EL and Unified EL and follow the 'Related' links to deep dive into the tech specifications of the syntax.

What you are trying to do, I think, is to invoke a script let like in JSP. I don't think you can do that with JSF EL. If you need specific formatting that you want to do with the service.onid value, you may want to take a look at the omni faces library functions at http://showcase.omnifaces.org/functions/Numbers.

But seeing that you are trying to do something more involved that pure formatting, I would recommend adding either a variable or function to your backing bean.

How can I express hex strings from numbers?

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