API / Apache Wicket Interview questions
What is a Wicket Panel?
A Panel is a reusable component that bundles its own chunk of markup and behavior — effectively a self-contained mini-page that can be embedded inside any other page or container, wherever a wicket:id is placed for it.
Like a Page, a Panel subclass pairs with its own HTML file, but that HTML fragment only needs the content that belongs inside the Panel's tag, wrapped in a required <wicket:panel> element rather than a full <html> document. Once defined, the same Panel class can be dropped into a dashboard, a sidebar, and a modal dialog without duplicating either the Java logic or the markup.
Panels are the standard way to keep a growing Wicket application from turning into one giant page class — a "user profile summary" or "search filter box" that appears on several pages is a natural candidate to become its own Panel.
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