„Herzlichen Glückwunsch zur Verbesserung Ihrer Fähigkeiten. Wir brauchen Leute, die zu allem bereit sind.“
„Ich bin mir sicher, dass Sie noch viele Aufgaben offen haben. Es ist an der Zeit, einige davon zu erledigen!“
16
Aufgabe
Java Collections, Level 5, Lektion 15
Gesperrt
Factories (part 1)
Hi!
Now you're going to dig into the Factory Method pattern. Let's take people as an example.
We'll determine what type of person someone is depending on his or her age.
In this task, we'll prepare the data that we'll use in the factory.
1. Create a shared Human interface for all types of people.
16
Aufgabe
Java Collections, Level 5, Lektion 15
Gesperrt
Factories (part 2)
1. Create a public MaleFactory class in the male package with a public getPerson method that accepts one int age argument and
returns an appropriate object of a class implementing the Human interface.
8
Aufgabe
Java Collections, Level 5, Lektion 15
Gesperrt
Factories (part 3)
1. Create a female package and create KidGirl, TeenGirl, and Woman classes in it by analogy with the classes in the male package.
2. Create a FemaleFactory in the female package by analogy with MaleFactory and using the same principle for getting objects.
8
Aufgabe
Java Collections, Level 5, Lektion 15
Gesperrt
Factories (part 4)
1. At the root of the task, create an AbstractFactory interface and move the factories' common method into it.
2. Implement the AbstractFactory interface in both factories.
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