Kamila Santos
I will have to refactor ! And now ? Refactoring Techniques in Java
#1about 2 minutes
What is refactoring and why is it important
Refactoring improves software design and makes code easier to understand without changing its external behavior.
#2about 6 minutes
Identifying the right moments to refactor code
Refactoring can be done preparatorily, for understanding, to remove dead code, as a long-term project, or ideally during code reviews.
#3about 2 minutes
Understanding the disadvantages of refactoring
While beneficial, refactoring can increase delivery time, cause merge conflicts, and require tests to be rewritten.
#4about 2 minutes
Recognizing common code smells in your codebase
Code smells like duplication, long methods, confusing names, and outdated comments indicate underlying problems that refactoring can fix.
#5about 3 minutes
Using extract function and extract variable techniques
Improve readability by grouping code into a new function or simplifying complex expressions by storing them in a descriptive variable.
#6about 3 minutes
Encapsulating variables and introducing parameter objects
Control data access by making variables private with getters/setters and simplify method signatures by grouping related parameters into a single object.
#7about 3 minutes
Breaking down complex methods with split phase
Decompose a method that performs multiple distinct tasks into separate, more focused methods to improve clarity and maintainability.
#8about 4 minutes
Simplifying class interactions and responsibilities
Refactor large classes by using extract class, remove unnecessary intermediaries with remove middle man, and move functions to more appropriate classes.
#9about 4 minutes
Cleaning up code with various refactoring techniques
Improve the codebase by removing unused code, changing value objects to references for shared identity, and decomposing complex conditional logic.
#10about 5 minutes
Improving object creation and class hierarchies
Replace simple constructors with flexible factory methods, move common methods to a superclass with pull up method, and simplify hierarchies by collapsing unnecessary layers.
#11about 2 minutes
Conclusion and key takeaways on refactoring
Refactoring techniques should be combined and used alongside principles like SOLID to solve specific problems and improve overall code quality.
#12about 6 minutes
Q&A: Prioritizing refactoring and specific techniques
The speaker answers questions on how to prioritize refactoring tasks, the benefits of the split phase technique, and when to use change value to reference.
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