Myfaces 2.0.6-Getting Conversion error when extending class or implementing interface

[Glad Campbell]

Hi All,

I've been getting the following error:

Caused by: javax.el.ELException: /searchResult.xhtml at line 25 and column 100 value="#{searchResult.results}": Cannot convert results of type class java.lang.String to class java.lang.Integer

whenever I extend my class SearchResult from ArrayList<Entry> or implement List<Entry>.
when I don't extend/implement the error seems to be different.
is it ok for me to just implement the getter method without implementing the setter for the backing beans?

	<h:dataTable value="#{searchResult.results}" width="700" border="1" var="entry" id="resultTable" >
		<h:column id="location">
			<f:facet name="header">
				<h:outputText value="#{msg['searchResult.verse.location']}"></h:outputText>
			</f:facet>
			<h:form>
				<h:commandLink id="verseLocation" action="viewVerse">  
					<f:param id="searchResultEntry" name="searchResultEntry" value="#{entry}"/>  
					<h:outputFormat value="{0}:{1}">
						<f:param value="#{entry.chapterNumber}"></f:param>
						<f:param value="#{entry.verseNumber}"></f:param>
					</h:outputFormat>
				</h:commandLink> 
			</h:form>
		</h:column>
		<h:column id="verse">
			<f:facet name="header">
				<h:outputText value="#{msg['searchResult.verse'] }"></h:outputText>
			</f:facet>
			<ui:repeat var="theTerm" value="#{entry.tokens}" >
				<h:form>
					<h:commandLink id="termLocation" action="viewTerm">  
						<f:param id="theTerm" name="theTerm" value="#{theTerm}"/>
						<h:outputFormat value="#{theTerm.unicode}"></h:outputFormat>
					</h:commandLink> 
				</h:form>
			</ui:repeat>
		</h:column>
	</h:dataTable>

any help or hint is much appreciated.
thanks,
glad