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public final void setObject(final Object object)
{
  throw new UnsupportedOperationException("Model " + getClass() + " does not support setObject(Object)");
}

Note that the LoadableDetachableModel inherits from AbstractReadOnlyModel.

The StringResourceModel we talked about above is another fine example of loadable detachable (and therefore read-only) model, since resource strings are read-only in nature. Actually, the StringResourceModel is a subclass of LoadableDetachableModel.

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The first example of property model is AbstractPropertyModel. It provides implementation details for the PropertyModel, CompoundPropertyModel and BoundCompoundPropertyModel classes we discussed above by implementing getObject() and
setObject() using a property expression and conversion type retrieved from a subclass via abstract method propertyExpression(). The simple PropertyModel class just returns the property expression and type it was constructed with:

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