Question

Does anyone know why the BookmarkablePageLink class is generic in wicket? I have been creating new BookmarkablePageLink<Object>(...) just to avoid the compiler warnings.

Should I be choosing a different generic type? A brief view of the code just confused me further about why it was generic.

Answer 1

From a brief overview of the javadoc it looks like the reason for generics can be seen in the abstract superclass Link. Specifically, a Link lets you associate with it a model object of a generic type via setModelObject. So from their example, when you override onClick:

new Link<MyObject>("myLink") {
     public void onClick()
     {
         MyObject obj = getModelObject();
         setResponsePage(new MyPage(obj));
     }
}

You can access a relevant model object.