UML Distilled: A Brief Guide to the Standard Object Modeling Language, Second Edition

Parameterized Class

Several languages, most noticeably C++, have the notion of a parameterized clasys, or template.

This concept is most obviously useful for working with collections in a strongly typed language. This way, you can define behavior for sets in general by defining a template class Set.

     class Set <T> {
         void insert (T newElement);
         void remove (T anElement);

When you have done this, you can use the general definition to make set classes for more specific elements.

         Set <Employee> employeeSet;

You declare a parameterized class in the UML using the notation shown in Figure 6-18.

Figure 6-18. Parameterized Class

The T in the diagram ...