Need to reference a java class in namespace

I need to refer to a javaclass in portlet :


<html xmlns="http://www.w3.org/1999/xhtml"
	xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
	xmlns:caf_f="http://webmethods.com/jsf/caf/core"
	xmlns:caf_h="http://webmethods.com/jsf/caf/html"
	xmlns:f="http://xmlns.jcp.org/jsf/core"
	xmlns:a="<myclasss">

The problem is my class is (on Eclipse in local in :
src
caf.war.myPortleName
myClass.java

First of all, it is the source an not the object
Secondly : it is not on the server. I guess this one should be in MWS folder, but in relative, I don’t know how to refer to this one.