Dynamic forms in jsf

Hi all,
This question has probably been asked a thousand times, but I can't find the answer.
I am an experienced Struts developer, but now I want to create an application using jsf.
It will be some kind of quiz with multiple choice questions. The problem is that the number of questions is not fixed, so for 1 quiz there can be 10 questions and for another one 20.
In struts I know that there is something called map-backed action forms that can be used for this kind of thing.
Does jsf have something like this? I can't seem to figure it out.
Thank you.

There is one thing that I don't like in the example. The generation of components in the backing bean. I am trying to generate them inside my jsp, but it won't work.
This is the code I use.
The jsp page
<body><h:form binding="#{backing_quiz.form1}" id="form1">
 
 <h:dataTable value="#{backing_quiz.questions}" var="question">
 <h:column>
 <h:outputText value="#{question.questionText}"/>
 <h:selectOneRadio layout="pageDirection">
 <f:selectItems value="#{question.answers}" />
 </h:selectOneRadio>
 </h:column>
 </h:dataTable>
 
 
 <h:messages/>
 
 
 <h:commandButton value="commandButton1"
 binding="#{backing_quiz.commandButton1}"
 id="commandButton1"
 action="#{backing_quiz.commandButton1_action}"/>
 
 </h:form></body>The backing bean with session scope.
public class Quiz {
 private HtmlForm form1;
 private HtmlDataTable dataTable1;
 private HtmlCommandButton commandButton1;
 private ArrayList questions = null;
 private HtmlSelectOneRadio selectOneRadio1;
 private UISelectItem selectItem1;
 private UISelectItem selectItem2;
 private UISelectItem selectItem3;
 public void setForm1(HtmlForm form1) {
 this.form1 = form1;
 public HtmlForm getForm1() {
 return form1;
 public ArrayList getQuestions() {
 if(questions == null) {
 System.out.println("Create new list");
 questions = new ArrayList();
 Question question = new Question();
 ArrayList answers = new ArrayList();
 answers.add(new SelectItem(1,"vraag 1 antwoord 1"));
 answers.add(new SelectItem(2,"vraag 1 antwoord 2"));
 answers.add(new SelectItem(3,"vraag 1 antwoord 3"));
 question.setQuestionText("vraag 1");
 question.setAnswers(answers);
 questions.add(question);
 question = new Question();
 answers = new ArrayList();
 answers.add(new SelectItem(1,"vraag 2 antwoord 1"));
 answers.add(new SelectItem(2,"vraag 2 antwoord 2"));
 answers.add(new SelectItem(3,"vraag 2 antwoord 3"));
 answers.add(new SelectItem(4,"vraag 2 antwoord 4"));
 question.setQuestionText("vraag 2");
 question.setAnswers(answers);
 questions.add(question);
 return questions;
 public void setDataTable1(HtmlDataTable dataTable1) {
 this.dataTable1 = dataTable1;
 public HtmlDataTable getDataTable1() {
 return dataTable1;
 public void setCommandButton1(HtmlCommandButton commandButton1) {
 this.commandButton1 = commandButton1;
 public HtmlCommandButton getCommandButton1() {
 return commandButton1;
 public String commandButton1_action() {
 // Add event code here...
 System.out.println("add item with number " + (((Question)questions.get(0)).getAnswers().size()+1));
 ((Question)questions.get(0)).getAnswers().add(new SelectItem((((Question)questions.get(0)).getAnswers().size()+1) , "Nieuwe vraag " + ((Question)questions.get(0)).getAnswers().size()+1 ));
 return null;
}The commandButton1_action() needs to add an answer to the first question. This is in fact the backsite where quizes can be created.
When the action is called an it's redirected to the same page, the answer is added, but due to the fact that the page is rerenderd, the previously selected are gone.
Is this clear or do I need to give more explanation?

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