Question

Im using the h:selectOneRadio and having issues when I try to change the default radio selection. Below is the JSF code

<h:selectOneRadio id="radioSelectID1" layout="pageDirection" value="#{scheduleBean.selectedRecurrenceValue}"   immediate="true" >
                                        <f:selectItem id="dailyID" itemLabel="#{adminBean.adminScreenLabelVO.dailyLabel}" itemValue="#{scheduleBean.dailyValue}"></f:selectItem>
                                        <f:selectItem id="weeklyID" itemLabel="#{adminBean.adminScreenLabelVO.weeklyLabel}" itemValue="#{scheduleBean.weeklyValue}"></f:selectItem>
                                        <f:selectItem id="monthlyID" itemLabel="#{adminBean.adminScreenLabelVO.monthlyLabel}" itemValue="#{scheduleBean.monthlyValue}"></f:selectItem>
                                        <f:ajax event="change" listener="#{scheduleBean.recurrenceChange}" render="recurrencePanelID" />
                                    </h:selectOneRadio>

below is the backingbean code for the selectedRecurrenceValue

public String getSelectedRecurrenceValue() {

    if(selectedRecurrenceValue == null)
    {
        selectedRecurrenceValue = adminScheduledetailsVO.getFrequency();
        if(selectedRecurrenceValue.equalsIgnoreCase(dailyValue))
        {
            dailyPanelRenderer = true ;
        }
        if(selectedRecurrenceValue.equalsIgnoreCase(weeklyValue))
        {
            dailyPanelRenderer = false ;
            weeklyPanelRenderer = true ;
        }

        if(selectedRecurrenceValue.equalsIgnoreCase(monthlyValue))
        {
            monthlyPanelRenderer = true ;
        }
    }

    return selectedRecurrenceValue;
}

The issue occurs when I try to change the radioselection option. Im unable to initialize the value selectedRecurrenceValue, since Im getting it dynamically. When I try to select another radio button, Im receiving a null pointer exception for selectedRecurrenceValue.
Any pointers to fix the issue would be really helpful.Thanks in Advance.

Answer 1

If I read your question right it seems that you don’t need the field selectedRecurrenceValue and should bind adminScheduledetailsVO.frequency directly to your selectOneRadio:

<h:selectOneRadio id="radioSelectID1" 
                  layout="pageDirection" 
                  value="#{scheduleBean.adminScheduledetailsVO.frequency}" >

Then of course adminScheduledetailsVO needs to be initialized before to avoid the NPE.