Java™ How To Program (Early Objects), Tenth Edition

26.7.4 CoverViewerController Class

Once you’ve defined the custom cell layout, updating the CoverViewerController to use it requires a single line of code, which you should add as the last statement in the CoverViewerController’s initialize method:

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booksListView.setCellFactory((listView) -> new ImageTextCell());

In this case, we pass to ListView method setCellFactory a lambda expression that returns a new object of the ImageTextCell class. Each time the ListView requires a new cell, this lambda expression will be invoked to get a new cell and the cell’s update method will be called to create the custom cell presentation.

The argument to setCellFactory is an implementation of the functional interface CallBack (package ...