Chapter 2. Real-World Objects to UML Diagrams and Java 9 via JShell

In this chapter, we will learn how to recognize objects from real-life situations. We will understand that working with objects makes it simpler to write code that is easier to understand and reuse. We will learn how to recognize real-world elements and translate them into the different components of the object-oriented paradigm supported in Java 9. We will:

• Identify objects from applications requirements
• Capture objects from the real world
• Generate classes to create objects
• Recognize variables and constants to create fields
• Identify actions to create methods
• Organize classes with UML diagrams
• Use feedback from domain experts to improve our classes
• Work with Java objects in JShell