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The Wicket project uses the IModel interface to bind components to your data. For instance showing a list of people's names in Wicket 1.3 looks like

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List<Person> people = ...;
add(new ListView("people", people) {
    protected void populateItem(Item item) {
        Person p = (Person)item.getModelObject();
        ...
    }
});

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Notice the ugly cast needed to get the person from the item? In Wicket 1.4 this has been modified to use generics so components know their types:

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List<Person> people = new ArrayList<Person>();
add(new ListView<Person>("people", people) {
    @Override
    protected void populateItem(ListItem<Person> item) {
        Person p = item.getModelObject();
    }
});

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This enables the Java compiler to generate errors like the following screenshot shows: Image Removed

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