RichFaces Interview Questions and Answers
Intermediate / 1 to 5 years experienced level questions & answers
Ques 1. How to pass parameters to a4j:commandButton?
See the example to pass parameters to a4j command button:
Ques 2. How to send and ajax request?
Ques 3. How to upload files in richfaces?
Using rich:fileUplaod.
Ques 4. What is a4j:param in RichFaces?
<a4j:commandButton value="Update Name" render="rep"> <a4j:param value="WithoutBook" assignTo="#{bean.name}" /></a4j:commandButton>Ques 5. What is a4j:status in RichFaces?
The a4j:status component is an indicator of an Ajax request. It has two states: start and stop. The start state indicates that an Ajax request is in progress. When an Ajax Response is returned, the component switches to the stop state. Give a loading progress on a ajax call:
<rich:modalPanel id="statusModalPanelId" autosized="true" resizeable="false">
<h:graphicImage value="/views/images/loading.gif"/>
<a4j:status id="statusId" onstop="Richfaces.hideModalPanel('statusModalPanelId');">
<f:facet name="start"></f:facet>
</a4j:status>
</rich:modalPanel>
Ques 6. What is rich:messages in RichFaces?
rich:messages is an extension for a standard h:messages component. In addition to what the standard component provides, rich:messages:
<rich:messages ajaxRendered="true" />Ques 7. What is rich:dataGrid in RichFaces?
The rich:dataGrid component accepts the same data sources as other iteration components and renders them in a grid format, the same way as the h:PanelGrid component does for in-line data. To define the grid's properties and styles, use the same definitions as for the h:panelGrid component.
<rich:dataGrid value="#{bean.allEmployees}" var="emp" columns="3" elements="9" width="600px" border="0"> <rich:panel bodyClass="pbody"> <f:facet name="header"> <h:outputText value="#{emp.name} #{emp.code}"></h:outputText> </f:facet> <h:panelGrid columns="2"> <h:outputText value="Salary:" styleClass="label"></h:outputText>
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Ques 8. What is rich:calendar in RichFaces?
The rich:calendar component allows you to select a date using a monthly calendar widget. It is possible to use the component in a popup or inline mode. In popup mode the calendar is initially rendered as an input for date with a button on the right side to trigger the popup. For inline mode, the monthly calendar is rendered on the page initially.
<rich:calendar value="#{calendarBean.dateSelected}" id="calendar" locale="#{calendarBean.locale}" popup="#{calendarBean.popup}" datePattern="#{calendarBean.pattern}" showApplyButton="#{calendarBean.showApply}" cellWidth="24px" cellHeight="22px" style="width:200px" disabled="#{calendarBean.disabled}"></rich:calendar>
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