Java Clean Code and Test

The course covers a selection of the following topics:

• Understanding and applying Clean Code: You will learn what constitutes Clean Code and how to implement it in your own projects.
• Class Design and SOLID Principles: You will learn how you should design your classes to enable flexible and extensible code structures, supported by the application of SOLID principles.
• Avoiding "Code Smells": You will learn how to recognize and avoid poorly written code (code smells) to improve the quality and readability of your code.
• Methods and Best Practices for Clear Identifiers: You will learn how to choose appropriate names for classes, variables, methods, etc. to improve the readability and understandability of your code.
• Fundamentals of Test Driven Development (TDD): You will learn the basics of TDD and how to apply it to write more reliable and error-free code.
• Using JUnit 5 for Unit Testing: You will learn how to write unit tests using JUnit 5 to ensure the quality and stability of your code.
• Code Refactoring: You will learn techniques for refactoring code safely and efficiently to improve its quality and readability.
• Working with Legacy Code: You will learn how to work with existing code and improve it to increase its quality and efficiency.

This Java course is aimed at all participants who already have prior knowledge of Java or a similar programming language.

If you have no previous knowledge at all, we recommend the "Java Basic Course".

In our Java Clean Code Seminar you will discover the art of clean programming. You'll learn to recognize the four symptoms of bad code and put the principles of clean code into practice. You will also learn how to design classes effectively by applying the SOLID and GRASP principles. The seminar dives deep into the world of Unit Testing and Test Driven Development and shows you how to identify and fix "code smells". With this training, you will not only improve your programming skills, but also increase the quality and maintainability of your code base.

On the first day of the course, we take an in-depth look at the four symptoms of bad code and architecture (Rigidity, Fragility, Inseparability, and Opacity). After looking at the causes of bad code, we go into the notion of "clean code" and discuss what makes good code. We analyze a Java class in its basic components: Identifiers, Comments, Methods, and Exception Handling. With a series of interactive code examples and small programming exercises, you will learn to effectively use clean code rules for identifiers, comments, methods, and exception handling.

On the second day, we broaden our focus and look at how classes interact with each other and how to design them so that new requirements can ideally be realized only through extensions rather than by modifying existing code. You will learn about and understand the SOLID and GRASP principles that are at the heart of good software architecture and design. Using code examples and programming exercises, you will put these principles into practice and further build your understanding of how to create clean code.

On the third day, we will cover the important topics of Unit Testing and Test Driven Development (TDD), which are an integral part of generating Clean Code. You will learn the basics of JUnit 5 and the three phases of TDD. In addition, we will look at the concept of code smells and work out how to identify and fix them. Using code examples and exercises, you will learn how to identify and fix code smells to improve the quality of your code.

Of course, as a participant in this Java course you will receive a certificate. Prerequisite for this is the complete participation in all course units and programming tasks.

3-day on-site course

The course takes place in our modern and top-equipped training rooms. We provide each participant with a modern laptop during the training. Drinks are provided by the Coding Academy. Access to the material will be provided at the latest on the first day of the course

3-day online course
The course takes place online. You only need a computer with Internet access; however, for some courses it is necessary to install the software used; this is specified in the description of the respective course. Access to the material will be provided at the latest on the first day of the course.

4-week program

A new and innovative learning concept. More information about the 4 weeks program can be found here.

If you would like to further deepen the Java knowledge you gained in this course, we recommend the Java Clean Architecture course.