设计模式学习 - 工厂模式

public interface People {
    void speek();
}

public class Boy implements People {
    @Override
    public void speek() {
        System.out.println("boy");
    }
}

public class Girl implements People {
    @Override
    public void speek() {
        System.out.println("girl");
    }
}

public interface PeopleFactory {
    People getPeople();
}

public class BoyFactory implements PeopleFactory {
    @Override
    public People getPeople() {
        return new Boy();
    }
}

public class GirlFactory implements PeopleFactory {
    @Override
    public People getPeople() {
        return new Girl();
    }
}

public class Client {
    public static void main(String[] args) {
        PeopleFactory pf = new BoyFactory();
        pf.getPeople().speek();

        PeopleFactory pf1 = new GirlFactory();
        pf1.getPeople().speek();
    }
}