I am trying to built a web page using prime-faces.I want to implement a page for a quiz. My bean has list of Question DTO which contains list of Answer DTO and I want to show the answers of each question with radio button because user can choose only one answer and one question could have only one correct answer at most. I have total 4 questions. I have written a following code
<h:selectOneRadio id="parkingOptions" value="#{theBean.userAnswer}">
<f:selectItems value="#{quizQuestionDto.quizAnswerList.answer}"/>
</h:selectOneRadio>
My bean has method called getUserAnswer and setUserAnswer to store an answer of user choice which accepts String . I an confused whether it should accept string or list of string because I have more than 1 Question to ask. I am getting an exception
java.lang.NumberFormatException: For input string: "answer" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Integer.parseInt(Integer.java:492) at java.lang.Integer.parseInt(Integer.java:527) at javax.el.ListELResolver.coerce(ListELResolver.java:163) at javax.el.ListELResolver.getValue(ListELResolver.java:51) at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) at org.apache.el.parser.AstValue.getValue(AstValue.java:183) at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184) at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) at javax.faces.component.UISelectItems.getValue(UISelectItems.java:129) at com.sun.faces.renderkit.SelectItemsIterator.initializeItems(SelectItemsIterator.java:208) at com.sun.faces.renderkit.SelectItemsIterator.hasNext(SelectItemsIterator.java:135) at com.sun.faces.renderkit.html_basic.SelectManyCheckboxListRenderer.encodeEnd(SelectManyCheckboxListRenderer.java:133) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:919) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863) at com.sun.faces.facelets.component.RepeatRenderer.encodeChildren(RepeatRenderer.java:104) at com.sun.faces.facelets.component.UIRepeat.process(UIRepeat.java:621) at com.sun.faces.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:1110) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:456) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) ... 61 more
