I think that private String gender = "F";
is suspect, you should probably not initialize it to "F", instead you can use onActivate or setupRender to default it, if it is null. -- Chris On Thu, Oct 23, 2014 at 2:45 PM, Deepak <mn.dee...@gmail.com> wrote: > I'm just beginning with Tapestry and referring to "Tapestry 5, Building Web > Applications" by Alexander Kolesnikov. But I'm using version 5.3.7. > > I have a page with a property annotated with @Persist and a default value > of an enum. > > <t:radiogroup t:value="gender"> > <input type="radio" t:type="radio" > t:value="literal:M" /> Male > <input type="radio" t:type="radio" > t:value="literal:F"/> Female > </t:radiogroup> > > @Property > @Persist > private String gender = "F"; > > When the page is brought up, it throws the following exception: > > http://localhost:8080/t5inaction/register > > An unexpected application exception has occurred. > > Exception assembling root component of page Register: Unable to instantiate > instance of transformed class tapestry5.inaction.pages.Register: > java.lang.reflect.InvocationTargetException > > why is this happening and what's wrong in my implementation ? > > Thanks, > Deepak >
