Job Ready Java

Lesson 25Applying Application Design

In this lesson, we will step back from the code and focus on some foundational topics that are needed by master-level Java developers. We have seen that well-designed classes are cohesive and well encapsulated. As we start to write more complex applications—applications with multiple classes and a wide-ranging set of capabilities—we need additional tools and techniques to keep our code clean and easy to maintain. In this lesson, we will look at one of these techniques, tiered application design, and how we can apply it.

Additionally, we will discuss the software development lifecycle (SDLC). SDLC is a general term for the process or processes that we use to build software applications. There are many different approaches and schools of thought on this topic, but there are two main categories: waterfall and iterative. We will look at each approach and then outline the approach that we will use in the rest of the course.

LEARNING OBJECTIVES

By the end of this lesson, you will be able to:

• Define CRUD
• Explain how tiered design benefits application development
• Identify the basic tiers of tiered design
• Describe the different parts of the Model-View-Controller pattern
• Explain packages as they apply to coding development
• Understand what the software development lifecycle is
• Explain waterfall including its advantages and disadvantages
• Compare waterfall to iterative approaches to designing software
• Explain agile including its advantages and disadvantages ...