ContinuationExperimentPage

<apex:page showHeader="false" sidebar="false" controller="ContinuationExperimentController">
	<apex:form>
        <apex:pageBlock title="Experiment with Continuation - Calling Service Async">
            <apex:commandButton action="{!callService}" value="Call Service" reRender="response" />
        </apex:pageBlock>

        <apex:pageBlock title="Response received from Service" id="response">
            <pre>{!res}</pre>
        </apex:pageBlock>

        <apex:pageBlock title="Experiment with Continuation - Calling Long Running Service Async">
            <apex:commandButton action="{!callServiceWithLongRunSrv}" value="Call Long Running Service" reRender="responseLongRunServ" />
        </apex:pageBlock>

        <apex:pageBlock title="Response received from Long Running Service" id="responseLongRunServ">
            <pre>{!resLongRunServ}</pre>
        </apex:pageBlock>
    </apex:form>

    <style type="text/css">
        pre {
            font-size   : 1em;
            color  : green;
        }
    </style>
</apex:page>