Legacy Java Code, The Most Practical Way to Fix It "Without Breaking" The reason refactoring is scary isn't because you don't understand the principles, but because you don't know how far you can trust your IDE. In this course, 👉 Using *only the refactorings guaranteed by IntelliJ IDEA* 👉 You'll develop **the sense to improve production code quickly and safely**.
112 learners
Level Basic
Course period Unlimited
Reviews from Early Learners
5.0
프로이직러 앵과장
Hello Mr. Bye, first of all, thank you for telling me about various development methods that I was ignorant of. I didn't know much about using various refactoring techniques using IntelliJ. It seems that it is necessary to read the manuals of Springboot and IntelliJ Tool carefully. Also, it was good to use shortcuts through refactoring methods or techniques, but more than anything, it seems good to look at the code level even though I only vaguely understood what TDD is in theory. I learned refactoring methods and shortcuts, but it would be better if there was a way to actually implement test code. I really feel like it comes from the practical experience needed for development. I am a real developer rather than a beginner. Mr. Bye, have a good day in the future and I look forward to the next content :)
5.0
KimAresen
While using Intellij, I only heard about the refactoring supported by the IDE and only thought about how to use it, but it was good that it actually wrote about the source code that changed while refactoring the example and in what situations the function is used. I am starting to feel more confident that I can slowly proceed with refactoring with the Intellij IDE. Thank you for the great lecture.
5.0
민구
It was a helpful lecture
Learn how to safely modify code by combining refactor functions through hands-on practice.
Learn how to quickly access refactoring in IntelliJ IDEA.
Let's learn how each refactoring technique works through examples.
You learned refactoring techniques from books,
but when you stand in front of actual production code, don't these thoughts come to mind?
"Is it really okay to Extract Method here?"
"The IDE will handle this much on its own, right...?"
"What if there are side effects? Won't I be responsible for them?"
👉 Most refactoring failures happen
not because we 'don't trust the tools'
but because we 'don't know what the tools guarantee'.
Developing the instinct to rapidly improve production code
by using only the refactorings that IntelliJ IDEA safely guarantees
In this course,
Instead,
✔ IntelliJ IDEA's refactoring that ensures safety up to compile time
✔ How the actual code changes and why it's safe
✔ In what order to combine various refactoring techniques
will be covered in a hands-on manner.
The entire process is
👉 based on IntelliJ refactoring features + shortcuts
👉 and clearly shows you "how far you can automate."
To quickly, safely, and easily refactor the Java code you're currently writing, you MUST!!!! know the refactoring techniques below.
In this course, you will learn all of the refactoring techniques mentioned above,
Through hands-on practice, we'll show you how to safely and quickly modify code using each refactoring technique.
Experience code evolution through refactoring!!!!!
Have you ever experienced modifying endless if statements like the one below?
Using the refactor feature supported in IntelliJ IDEA, through a few modifications... you can evolve it as shown below.
I notice the `
Q. Why should I learn IntelliJ IDEA refactor features?
A. When modifying code, there are more cases where you can't simply use "find and replace." That's why each Java editor provides refactoring features, though they may have different names. Once you master refactoring techniques, you can significantly reduce the difficulties in modifying code, which is why I believe it's essential to learn them.
Q. Can non-majors take this course?
A. Yes, it's possible if you have some prerequisite knowledge. If you have a passion for development, whether you majored in it or not doesn't seem to matter. :) However, having very basic development experience will help you understand better. If you find it difficult, don't struggle alone—feel free to reach out anytime :)
Q. Is this course dependent on a specific platform?
A. Yes, it may be platform-specific as the course introduces features supported by IntelliJ IDEA, a Java editor program commonly used by many major companies, and is structured in a MacOS environment. However, for Windows users, shortcuts are displayed on the recorded screen, so there should be no problem following along.
Since the shortcuts are configured to be displayed on the recorded screen for Windows users, there should be no problem following along.
Who is this course right for?
Someone who knows Java syntax but always hesitates when it comes to refactoring
Anyone who has experienced side effects while modifying legacy code
People who know what 'Extract Method' is, but are confused about when to use it
Need to know before starting?
Java Basic Syntax
Basic usage methods for IntelliJ IDEA
Passion for development
112
Learners
5
Reviews
4.8
Rating
1
Course
Hello.
I enjoy learning on my own and sharing what I have experienced,
I am Seunggyeom Kim, a developer who loves programming.
Current) Woowa Brothers - Backend Developer Former) JobKorea - Platform Architecture Former) 11st - Backend Developer Former) WeMakePrice - Backend Developer
Current) Woowa Bros - Backend Developer
Ex) JobKorea - Platform Architecture
Ex) 11st - Backend Developer
Former) WeMakePrice - Backend Developer
I am Seunggyeom Kim, a developer. Current) Woowa Bros - Backend Developer Former) JobKorea - Platform Architecture Former) 11st - Backend Developer Former) WeMakePrice - Backend Developer
I am Seunggyeom Kim, a developer. Current) Woowa Bros - Backend Developer Former) JobKorea - Platform Architecture Former) 11st - Backend Developer Former) WeMakePrice - Backend Developer
All
28 lectures ∙ (2hr 30min)
Course Materials:
All
5 reviews
4.8
5 reviews
Reviews 1
∙
Average Rating 5.0
5
Hello Mr. Bye, first of all, thank you for telling me about various development methods that I was ignorant of. I didn't know much about using various refactoring techniques using IntelliJ. It seems that it is necessary to read the manuals of Springboot and IntelliJ Tool carefully. Also, it was good to use shortcuts through refactoring methods or techniques, but more than anything, it seems good to look at the code level even though I only vaguely understood what TDD is in theory. I learned refactoring methods and shortcuts, but it would be better if there was a way to actually implement test code. I really feel like it comes from the practical experience needed for development. I am a real developer rather than a beginner. Mr. Bye, have a good day in the future and I look forward to the next content :)
@Manager Ang, thank you for your first feedback. In offline, I shared this content comfortably with developers, but since it was my first time making an online course, it was more difficult than I thought ^^; while filming the video (in a fluster...) @.@ Nevertheless, thank you very much for your positive feedback. Currently, I am contemplating various roadmaps and thinking a lot about how to provide good guidelines for beginners. I will actively review the comments and work even harder to make the next course better. Thank you. (bow!!)
Reviews 1
∙
Average Rating 5.0
5
It was a helpful lecture
Thank you for your opinion. I will continue to reward you with good content ^^ Thank you.
Reviews 27
∙
Average Rating 5.0
5
While using Intellij, I only heard about the refactoring supported by the IDE and only thought about how to use it, but it was good that it actually wrote about the source code that changed while refactoring the example and in what situations the function is used. I am starting to feel more confident that I can slowly proceed with refactoring with the Intellij IDE. Thank you for the great lecture.
@KimAresen, Thank you for your kind review. In my long experience of programming, I don't think there's a topic that's as difficult to find an answer to as the act of refactoring ^^ So, I'm glad to hear that it was helpful to you, and I'll work hard to prepare for the next lecture as well. Thank you again.
Reviews 8
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Average Rating 4.3
Reviews 10
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Average Rating 5.0
$26.40
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