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Features of UML2 | Long Talk | Copyright © IBM
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14
Generics: Examples - Wildcards
•In Java, wildcards are
represented by ? which stands for an unknown type.
•When we talk about
bounds we refer to the ability to specify that bindings must either
be the super type of some classifier or extend some
classifier.
public class MyClass3Impl extends EObjectImpl implements MyClass3 {
protected List<? extends Car> someReference;
protected List<? super Car> anotherReference;
}
protected List<? extends Car> someReference;
protected List<? super Car> anotherReference;
}