Design Patterns in the 21st Century: Conclusion

Design Patterns in the 21st Century: Conclusion

This is part five of my talk, Design Patterns in the 21st Century. Over the past week, we've seen three examples of design patterns that can be drastically improved by approaching them with a functional mindset. Together, these three span the spectrum. The Abstract Factory...

Design Patterns in the 21st Century: The Chain of Responsibility Pattern

Design Patterns in the 21st Century: The Chain of Responsibility Pattern

Here's a thing you might not see a lot. @Test public void hungryHungryPatrons() { KitchenStaff alice = new PieChef(); KitchenStaff bob = new DollopDistributor(); KitchenStaff carol = new CutleryAdder(); KitchenStaff dan = new Server(); alice.setNext(bob); bob.setNext(carol); carol.setNext(dan); Patron patron = new Patron(); alice.prepare(new Pie()).forPatron(patron); assertThat(patron,...

Design Patterns in the 21st Century: The Adapter Pattern

Design Patterns in the 21st Century: The Adapter Pattern

This is part three of my talk, Design Patterns in the 21st Century. The Adapter pattern bridges worlds. In one world, we have an interface for a concept; in another world, we have a different interface. These two interfaces serve different purposes, but sometimes we...

Design Patterns in the 21st Century: The Abstract Factory Pattern

Design Patterns in the 21st Century: The Abstract Factory Pattern

This is part two of my talk, Design Patterns in the 21st Century. This pattern is used everywhere in Java code, especially in more "enterprisey" code bases. It involves an interface and an implementation. The interface looks something like this: public interface Bakery { Pastry...

Design Patterns in the 21st Century, Part One

Design Patterns in the 21st Century, Part One

I've been having a bit of trouble blogging recently. In an effort to get back into it, I thought I'd take a talk that I presented at JAX London last year, split it up into blog-sized posts as it's pretty long, and post them all...

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