Want a Default Selected Radio Button. What to Do?

[JiaPei Jen]

I want to show a default selected radio button when the web page is loaded for the first time. Normally, I create a set of radio buttons this way:

<h:selectOneRadio value="#{dataManagementBean.dataTransferType}" layout="pageDirection" >
     <f:selectItems value="#{dataManagementBean.dataTransferTypeItems}"/>
</h:selectOneRadio>

To show a default selection, I can add a statement in my backing bean

String defaultSelectedDataTransferType = "imports";

where "imports" is the value of one of my buttons. Then, I display the web page this way:

<h:selectOneRadio value="#{dataManagementBean.defaultSelectedDataTransferType}" layout="pageDirection" >
     <f:selectItems value="#{dataManagementBean.dataTransferTypeItems}"/>
</h:selectOneRadio>

The problem is that whatever the radio button that users actually select, its value is assigned to the defaultSelectedDataTransferType.

I want the dataTransferType gets the value of the button that users select. What should I do?