Apache Wicket - How to retrieve the selected value from DropdownChoice in java

Question

Java class : This is the method where i created the dropdownchoice object for select menu and add it to the form. In this method adding the projects list to the billableProjectsList

public class ReportCriteria implements Serializable {
    private static final long serialVersionUID = xxxxxxxxxL;
   
    private ReportCriteria selectedBillableProject;


    public ReportCriteria getSelectedBillableProject() {
        return selectedBillableProject;
    }

    public void setSelectedBillableProject(ReportCriteria selectedBillableProject) {
        this.selectedBillableProject = selectedBillableProject;
    }
}

private Form<ReportCriteria> createCriteriaPanel(String id, 
                                         IModel<ReportCriteria> model) {
  SelectionForm form = new SelectionForm(id, model);
  ReportCriteria criteria = (ReportCriteria) getDefaultModelObject();
  List<Project> billableProjects = ProjectUtil.filterBillable(allProjects);
  IModel<Project> dropdownModel =   new 
                    PropertyModel<Project(criteria,"selectedBillableProject");
  DropDownChoice<Project> billableProjectsList = new DropDownChoice<>(
                    "projectsList",
                    dropdownModel,
                    billableProjects,
                    new ChoiceRenderer<Project>("fullNameWithCustomer"));
   billableProjectsList.setLabel(new ResourceModel("printMonth.billable"));
   form.add(billableProjectsList);
   System.out.println("selectedBillableProject --- >"
                                  +billableProjectsList.getModelObject()
                                  +"value is --->"
                                  +criteria.getSelectedBillableProject());
    }

Html file code : This html file is for select menu display .

<td style="padding-left: 5px">
   <strong>
       <wicket:message key="printMonth.billable"/>
   </strong><br/>
   <p style="border-top: solid 1px white;margin:0 0 5px 0;padding:0">
      <select wicket:id="projectsList"></select>
    </p>
</td>

Error : This error is resulted once i select the dropdown value from the list . I have created the variable selectedBillableObject in ReportCriteria class and have added the setter and getter. But i am unable to convert it in this method to add it to form since it is type casting issue . But when i tried to print the value in selectedBillablePorject , its is null .

<pre>11-19@16:52:50 ERROR org.apache.wicket.DefaultExceptionMapper - Unexpected error occurred
org.apache.wicket.WicketRuntimeException: Method onFormSubmitted of interface org.apache.wicket.markup.html.form.IFormSubmitListener targeted at 
[SelectionForm [Component id = criteriaForm]] on component [SelectionForm [Component id = criteriaForm]] threw an exception
    at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:268)
    at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:216)
    at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:243)
    at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:236)
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:890)
    at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261)
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218)
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289)
    at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259)
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:201)
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:282)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484)
    at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:151)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1476)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
    at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.Server.handle(Server.java:370)
    at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
    at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982)
    at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:258)
    ... 47 more
Caused by: org.apache.wicket.util.convert.ConversionException: Could not convert value: net.rrm.ehour.domain.Project[----] to type: net.rrm.ehour.report.criteria.ReportCriteria. Could not find compatible converter.
    at org.apache.wicket.ConverterLocator$DefaultConverter.convertToObject(ConverterLocator.java:121)
    at org.apache.wicket.core.util.lang.PropertyResolverConverter.convert(PropertyResolverConverter.java:95)
    at org.apache.wicket.core.util.lang.PropertyResolver$MethodGetAndSet.setValue(PropertyResolver.java:1194)
    at org.apache.wicket.core.util.lang.PropertyResolver$ObjectAndGetSetter.setValue(PropertyResolver.java:651)
    at org.apache.wicket.core.util.lang.PropertyResolver.setValue(PropertyResolver.java:151)
    at org.apache.wicket.model.AbstractPropertyModel.setObject(AbstractPropertyModel.java:132)
    at org.apache.wicket.Component.setDefaultModelObject(Component.java:3052)
    at org.apache.wicket.markup.html.form.FormComponent.setModelObject(FormComponent.java:1577)
    at org.apache.wicket.markup.html.form.FormComponent.updateModel(FormComponent.java:1098)
    at org.apache.wicket.markup.html.form.Form$FormModelUpdateVisitor.component(Form.java:230)
    at org.apache.wicket.markup.html.form.Form$FormModelUpdateVisitor.component(Form.java:200)
    at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:274)
    at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:262)
    at org.apache.wicket.util.visit.Visits.visitPostOrder(Visits.java:245)
    at org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrder(FormComponent.java:424)
    at org.apache.wicket.markup.html.form.Form.internalUpdateFormComponentModels(Form.java:1860)
    at org.apache.wicket.markup.html.form.Form.updateFormComponentModels(Form.java:1825)
    at org.apache.wicket.markup.html.form.Form.process(Form.java:955)
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:788)
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:721)
    ... 52 more
11-19@16:53:18 ERROR org.apache.wicket.DefaultExceptionMapper - Unexpected error occurred
org.apache.wicket.WicketRuntimeException: Method onFormSubmitted of interface org.apache.wicket.markup.html.form.IFormSubmitListener targeted at [SelectionForm [Component id = criteriaForm]] on component [SelectionForm [Component id = criteriaForm]] threw an exception
    at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:268)
    at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:216)
    at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:243)
    at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:236)
    at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:890)
    at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
    at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261)
    at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218)
    at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289)
    at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259)
    at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:201)
    at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:282)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484)
    at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:151)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1476)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
    at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.Server.handle(Server.java:370)
    at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
    at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982)
    at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:258)
    ... 47 more
Caused by: org.apache.wicket.util.convert.ConversionException: Could not convert value: net.rrm.ehour.domain.Project@328849ff[]] to type: net.rrm.ehour.report.criteria.ReportCriteria. 
ould not find compatible converter.
    at org.apache.wicket.ConverterLocator$DefaultConverter.convertToObject(ConverterLocator.java:121)
    at org.apache.wicket.core.util.lang.PropertyResolverConverter.convert(PropertyResolverConverter.java:95)
    at org.apache.wicket.core.util.lang.PropertyResolver$MethodGetAndSet.setValue(PropertyResolver.java:1194)
    at org.apache.wicket.core.util.lang.PropertyResolver$ObjectAndGetSetter.setValue(PropertyResolver.java:651)
    at org.apache.wicket.core.util.lang.PropertyResolver.setValue(PropertyResolver.java:151)
    at org.apache.wicket.model.AbstractPropertyModel.setObject(AbstractPropertyModel.java:132)
    at org.apache.wicket.Component.setDefaultModelObject(Component.java:3052)
    at org.apache.wicket.markup.html.form.FormComponent.setModelObject(FormComponent.java:1577)
    at org.apache.wicket.markup.html.form.FormComponent.updateModel(FormComponent.java:1098)
    at org.apache.wicket.markup.html.form.Form$FormModelUpdateVisitor.component(Form.java:230)
    at org.apache.wicket.markup.html.form.Form$FormModelUpdateVisitor.component(Form.java:200)
    at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:274)
    at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:262)
    at org.apache.wicket.util.visit.Visits.visitPostOrder(Visits.java:245)
    at org.apache.wicket.markup.html.form.FormComponent.visitComponentsPostOrder(FormComponent.java:424)
    at org.apache.wicket.markup.html.form.Form.internalUpdateFormComponentModels(Form.java:1860)
    at org.apache.wicket.markup.html.form.Form.updateFormComponentModels(Form.java:1825)
    at org.apache.wicket.markup.html.form.Form.process(Form.java:955)
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:788)
    at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:721)
    ... 52 more
    </pre>

Was finally able to retrieve the selected value by retrieving the billableProjectList.getModelObject() and setting it to criteria.setSelectedBillableProject(). — sharonm, Nov 20 '20 at 13:08

score 2 · Answer 1 · answered Nov 19 '20 at 05:59

2

Lest go by parts:

1.- Why are you trying to use a property model to handle DropBox selected option? You are defining a Property Model like this:

IModel<Test> dropdownModel =   new PropertyModel<Test>(this," ");

Property Model is used to tied the fields of yout POJO with the model object, doing the "binging" between your POJO's and Wicket componentes automitically. In your sintax this should be a model object that handles a POJO, and instead of " " you should put the name of the property of the POJO that will be tied to that Property Model. Maybe this is the reason of why you are getting "No get Method defined because this doesnt have a POJO with a property called "selectedBillableItem", remember, Property Models use 'getters' and 'setters' for seeking the POJO's properties.

2.- I have used DropDownChoice as follows:

DropDownChoice myDropDownChoice = new DropDownChoice<String>("myDropDownChoiceWicketId", new Model<String>(), List<String> object);

3.- Recovering the selected item of DropDownChoice as follows:

anyModelObject.getObject().setToAnyProperty(myDropDownChoice.getModelObject());

Hoping you get any hints from this.

answered Nov 19 '20 at 05:59

Acasmol

21
4

- i updated the code as you said to : IModel dropdownModel = new PropertyModel(getDefaultModel(),"selectedBillableItem"); since the getDeafultModel() is already in use for some other dropdownchoice object . I have also defined the setter and getter for selectedBillableItem. But still it results in Caused by: org.apache.wicket.WicketRuntimeException: No get method defined for class: class selectedBillableItem – sharonm Nov 19 '20 at 09:03
- i could fix the error by the following code - IModel dropdownModel = new PropertyModel(criteria,"selectedBillableItem"); it is displaying the dropdown values and not showing the earlier get method exception . Since i created the property in POJO class - criteria for selectedBillableItem – sharonm Nov 19 '20 at 11:26
But when i try to print the value of selected object using - billableItemsList.getModelObject() - it is null even though i change the value . Shows the error - Caused by: org.apache.wicket.util.convert.ConversionException: Could not convert value: – sharonm Nov 19 '20 at 11:27
Verify what kind of object are you receiving from 'billableItemsList.getModelObject()' after change the value. Starting from your first approach, you can try: 'IModel projectModel = new Model(); DropDownChoice dropDownChoice = new DropDownChoice("dropdownId", projectModel ,lisTestModel'); dropDownChoice.getObjectModel();' – Acasmol Nov 19 '20 at 16:58
after i changed the code to IModel projectModel = new Model(); , their is no error . But when i evaluate the expression billableProjectsList.getModelObject() - it is null value – sharonm Nov 19 '20 at 19:50

martin-g · Accepted Answer · 2020-11-19T22:44:20.053

1

What is

 new PropertyModel<Test>(this," ");

?

PropertyModel is used to read/write object's member fields. I am pretty sure Java syntax does not allow to name a member field as " ", i.e. a space character.

In addition the method that you should use is dropDownChoice.getModelObject(), not getObject().

Update:

public class ReportCriteria implements Serializable {
private static final long serialVersionUID = xxxxxxxxxL;

private ReportCriteria selectedBillableProject;

selectedBillableProject has to be a Project, not ReportCriteria.

edited Nov 19 '20 at 22:44

answered Nov 18 '20 at 11:20

martin-g

17,243
2
23
35

Also the ChoiceRenderer looks a bit odd as it's typed with 'Items', while its DropDownChoice uses 'Test' as type. – Andrea Del Bene Nov 18 '20 at 12:11
I added the line -new PropertyModel(this," "); -- to set the default value as empty string in dropdown. Is it not the right way ? – sharonm Nov 18 '20 at 13:03
I even tried to retrieve the dropdownchoice.getModelObject() - but it didnt show the value nor can be added to Form sincei get typecasting error – sharonm Nov 18 '20 at 13:05
Test selectedItem= billableItemsList .getModelObject(); - when i try to retrieve this , i receive java.lang.ClassCastException: – sharonm Nov 18 '20 at 13:11
@martin-g , i updated the code as "IModel dropdownModel = new PropertyModel(this,"selectedBillableItem ");" . Also defined the variable with the setters and getters for selectedBillableItem . But it is resulting in error as " org.apache.wicket.WicketRuntimeException: Exception in rendering component: [DropDownChoice [Component id = itemsList]] Caused by: org.apache.wicket.WicketRuntimeException: No get method defined for class: selectedBillableItem – sharonm Nov 18 '20 at 17:57
Please update the code in the question so we can see what is not correct. – martin-g Nov 19 '20 at 07:45
Please provide the whole stacktrace of the new error. – martin-g Nov 19 '20 at 13:31
We are almost there - please share the code of ReportCriteria. – martin-g Nov 19 '20 at 19:25
martin-g - i updated the selectedBillableProject to Project and rerun the applciation . But the below code is providing null value :System.out.println("selectedBillableProject ----->"+billableProjectsList.getModelObject()+"value is --->"+criteria.getSelectedBillableProject()); console displayed as selectedBillableProject ----->nullvalue is --->null – sharonm Nov 20 '20 at 07:14
1. Check browser's DevTools Network tab to see what value is being submit; 2) Override Form#onError() and put a breakpoint to see whether it is called. It is a good practice to update a FeedbackPanel with error/success messages – martin-g Nov 20 '20 at 07:45
martin-g , i realised that the line of code "System.out.println("selectedBillableProject ----->"+billableProjectsList.getModelObject()+"value is --->"+criteria.getSelectedBillableProject());" runs when the form is loaded , so the default value is empty hence it shows null . Hence i tried to set the value to the feild property , but unable to add to the form due to type cast issue . criteria.setSelectedBillableProject(billableProjectsList.getModelObject()); Any suggestions on the same . – sharonm Nov 20 '20 at 09:41
martin-g - since have a seperate function as OnSubmit , where i want to retrieve the selected value , but without adding to the form i will not be able to use the same – sharonm Nov 20 '20 at 09:42
@martin-g Thanks alot it worked finally . Updated the resolution – sharonm Nov 20 '20 at 13:09

Apache Wicket - How to retrieve the selected value from DropdownChoice in java

2 Answers2