I am trying to build up a command button in java code and tie action params to it. Since the action param is not a UIcomponent I cannot use the method to add children. How can i recreate the following in java code?

<a4j:outputPanel id="GetNextButton">
 <h:panelGroup>
 <rich:spacer width="40" />
 <a4j:commandButton value="#{msgs['HomeView.button.getNext']}"
 action="#{StepProcessorView.getNext}">
 <a4j:actionparam name="selectedBusinessArea"
 value="#{homeView.selectedBusinessArea}"
 assignTo="#{StepProcessorView.selectedBusinessArea}" />
 <a4j:actionparam name="selectedFunction"
 value="#{homeView.selectedFunction}"
 assignTo="#{StepProcessorView.selectedFunction}" />
 <a4j:actionparam name="selectedQueue" value="#{homeView.selectedQueue}"
 assignTo="#{StepProcessorView.selectedQueue}" />
 <a4j:actionparam name="selectedWorkType"
 value="#{homeView.selectedWorkType}"
 assignTo="#{StepProcessorView.selectedWorkType}" />
 <a4j:actionparam name="selectedTransactionType"
 value="#{homeView.selectedTransactionType}"
 assignTo="#{StepProcessorView.selectedTransactionType}" />
 <a4j:actionparam name="selectedProduct"
 value="#{homeView.selectedProduct}"
 assignTo="#{StepProcessorView.selectedProduct}" />
 </a4j:commandButton>
 <h:commandLink>
 <rich:toolTip value="#{msgs['HomeView.tooltip.getNext']}"
 direction="top-right" layout="inline" />
 <h:graphicImage value="/images/icon_qmark.jpg" width="20" height="20" />
 </h:commandLink>
 </h:panelGroup>
 </a4j:outputPanel>

// Add the command button
 HtmlAjaxCommandButton button = new HtmlAjaxCommandButton();
 panelGroup.getChildren().add(button);
 button.setValueBinding("value", FacesContext.getCurrentInstance().getApplication()
 .createValueBinding("#{msgs['HomeView.button.getNext']}"));
 Class[] arguments = new Class[0];
 button.setAction(FacesContext.getCurrentInstance().getApplication().createMethodBinding(
 "#{StepProcessorView.getNext}", arguments));
 // Add the ajax Support
 Iterator keys = inComboGroups.keySet().iterator();
 while (keys.hasNext())
 {
 String key = (String) keys.next();
 ActionParam param = new ActionParam();
 param.setAssignToBinding("#{StepProcessorView.selections['" + key + "']}");
 param.setValue("#{homeView.selections['" + key + "']}");

 button.getChildren().add(param);
 }