Advanced Java: Design Patterns

Name: Advanced Java: Design Patterns
Author: Scott Stanlick

Learn how to apply safe and effective design patterns using the Java language

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Course: On-Demand

Hey, welcome back, guys. Scott Stanlick here. In these lessons, we're gonna take a look at design patterns and how we can implement design patterns using Java. We're gonna begin with an overview of design patterns, what they are, why we should care. Then we're gonna take a look at the three different categories of design patterns: creational, structural, and behavioral. So in this lesson, let's begin by talking about what a design pattern is. We can see here clearly the textbook definition is a solution to a commonly occurring problem in software. If you think about mechanics or construction workers or any other professional trade, these folks have a language that they speak. If someone's fixing up your kitchen or building a new cabinet and they talked about let's put in a dovetail joint, they're talking about really nice joint for like a drawer that you would pull out that would last forever. Design patterns in software is the same idea for software developers. They're blueprints, they're tried and tested solutions to a problem in context, of course, and they have a name. So rather than a bunch of programmers getting together and talking about well, we have a problem and I'm not sure what we're gonna have to do to solve this, with a few design patterns under your belt, it's a straightforward proposition to just pull one of these patterns out of your toolboxes and apply it. So we see three different classifications of design patterns: creational, structural, and behavioral. And I've listed them, there's 24 of them here. These originally came from the "Gang of Four." This was a hardback Addison and Wesley textbook way back in the day. And they've stood the test of time. So the creational patterns are designed around the notion of class instantiation. So we've long since been doing new this, and new that and new something else. And the problem with that is as soon as you put the keyword new in your source code and compile it, it's hard wired in there. You're never gonna get any other type of object, even if a better one comes along. So we try to keep the new keyword out of our source code, out of our application. And creational design patterns go a long way to help us accomplish that goal. So we see a variety of creational patterns and we will look at one or more of those in an upcoming lesson. The structural type design patterns are concerned with class structure and composition. How are classes composed and can a class pretend to be something that it never was if evolution happens and say a third-party software package comes along and it needs to be able to work with existing code and also with this new code. So structural patterns, you see there's a series of them here depending upon again your intent or the context of your problem. And then lastly, we see the behavioral design patterns. Those are the ones that have to do with a class basically doing things on the fly, if you will, making decisions in runtime, in real time such that they change their composure or they're capable of doing things they weren't doing 30 milliseconds ago. So these are fabulous patterns if you're looking at developing forward-thinking code that sort of thinks for itself if you will. So stay tuned and I appreciate you watching.

Advanced Provider : Scott Stanlick 3 Lessons · 13m in Arabic, German, English, Spanish, French, Portuguese, Chinese

Course Description

In these lessons, you’ll learn about design patterns and how they apply to Java. Design patterns are typical solutions to common problems in software design, with each pattern like a blueprint you can customize to solve a particular design problem in your code.

Customers need timely software solutions to maintain a competitive advantage and we’ll discuss how these software blueprints help to solve programming problems quickly. You’ll learn how design patterns are subdivided into categories, with each category comprising a collection of related patterns.

We’ll also demonstrate creational, structural and behavioral patterns using Java code. Finally, you’ll discover the power of patterns—proven solutions to programming problems—and how to employ them in your own software development. solution.

What You'll Learn

Understand how design patterns work in Java as reusable solutions to common software design problems
Identify creational, structural, and behavioral patterns in code
Explain the compositions of design patterns and how categories group related patterns
Apply creational, structural, and behavioral patterns demonstrated through Java code
Employ proven pattern-based solutions in your own software development

Key Takeaways

Design patterns are typical solutions to common problems in software design, with each pattern acting like a customizable blueprint for a particular design problem.
Design patterns are subdivided into categories, with each category comprising a collection of related patterns.
The course demonstrates creational, structural, and behavioral patterns using Java code.
Design patterns are proven solutions to programming problems that help developers deliver timely software solutions and solve programming problems quickly.

Frequently Asked Questions

What will I learn in this course?

You'll learn how design patterns work in Java, how to identify creational, structural, and behavioral patterns in code, and how to explain the compositions of patterns, with demonstrations using Java code.

What topics does this course cover?

The course covers a Design Patterns Overview, Creational Patterns, and Structural and Behavioral Patterns, demonstrating creational, structural, and behavioral patterns using Java code.

What are design patterns?

Design patterns are typical solutions to common problems in software design; each pattern is like a blueprint you can customize to solve a particular design problem in your code, and they are proven solutions to programming problems.

What skills does this course help build?

The course relates to skills including Architectural Patterns, Composite Patterns (Software Design Patterns), Distributed Design Patterns, Object-Oriented Design, Pattern Language, and Software Design.