Our refactoring critiques instantly visualize your programming performances, showing you what states you were in (failing tests, passing tests, etc.), refactorings you implemented, compilation errors you had, the duration of your work, how you scored and what our expert feedback system found was missing from your performance.
Learn 9 of the most practical Design Patterns to significantly improve the design of your code.
These patterns help you simplify logic, make code easier to understand and reduce effort needed to modify or extend behavior.
Watch our experts efficiently explain models, demonstrate tools and solve exercises.
Like a good pop song, every video we make holds your attention and gets you into a better development rhythm.
No other eLearning system on the planet matches our discussion forums, woven throughout every album.
Ask questions, get expert replies, read and weigh in on fascinating discussion threads from a global audience.
|The Essence of Composed Method||4|
|Composition and Performance||5|
|Composed Method: The Players||6|
|The Importance of Storytelling||7|
|Guidelines For Creating Composed Methods||8|
|Composed Method Motivation||9|
|Composed Method Objections||10|
|The Essence of Template Method ← Click to Preview||13|
|Template Method: An Example||14|
|How Mike the Scalper Scores Tickets||15|
|A Template Method for Scoring Tickets||16|
|Template Method Players ← Click to Preview||17|
|Putting Meat on the Bones||18|
|Hackers and Customers Quiz||19|
|Refactoring to a Template Method||20|
|Composed Methods vs. Template Methods||21|
|To Override Or Not To Override?||22|
|The Essence of Factory Method||25|
|Factory Method Players||26|
|Creation Methods and Factory Methods||27|
|Factory Method: Fact or Fiction?||28|
|The Ministry Of Software ← Click to Preview||30|
|Factory Method: Portfolio Quiz||31|
|Factory Method: Coupling Quiz||32|
|The Essence of the Strategy Pattern||35|
|Avoiding a Subclass Explosion||36|
|Strategy: The Players||37|
|Strategy: A Simple Problem||38|
|Collaboration and Encapsulation||39|
|Cooperation and Visibility||40|
|Passing Data as Parameters||41|
|Passing the Entire Context||42|
|Starting Your Own Family||45|
|Strategy: A Question of Values||46|
|Strategy: Freedom from Choice||47|
|Strategy: Sharing Your Strategies||48|
|Strategy: Accommodating Variety||49|
|Essence of the Composite Pattern ← Click to Preview||52|
|The One/Many Distinction||53|
|Refactoring A One/Many Distinction||54|
|JUnit: A Classic Composite||56|
|XML: A Natural Composite||57|
|Know Your Composites||58|
|Why Do We Love Builders?||61|
|Complicated, Repetitive and Verbose Composite Construction||62|
|Building Different Products Using Identical Construction Steps||66|
|Builder: The Players||67|
|Decoupling Construction Logic With A Builder||68|
|Command Essence ← Click to Preview||72|
|A Classic Example||73|
|Command: The Players||74|
|Executing and Unexecuting Commands||75|
|Too Many Null Checks!||78|
|Null Object To The Rescue!||79|
|When Is A Null Object Unnecessary?||80|
|Null Object Players ← Click to Preview||81|
|Much Ado About Nothing||82|
|Adapter: The Essence||85|
|Adapter: The Players||86|
|Adapter: The Quiz||89|
|In Need Of An Adapter ← Click to Preview||91|
|Choosing A Preferred Interface||92|
|Problem Source Code||93|
|Critiquing Your Performance||95|
|Download, Build & Test Instructions||96|
|Upload Your Exercise||97|
|A Graph of Your Refactoring & Testing Activity||98|
|Your Critique Results||99|
|Your Customized Feedback||100|
|Solution Video Step 1: Extract Interface ← Click to Preview||101|
|Solution Video Step 2: Extract Class||102|
|Solution Video Step 3: Move Method||103|
|Solution Video Step 4: Implement Interface||104|
|Solution Video Step 5: Pull Up Fields & Methods||105|
You can use whatever developments tools you prefer. If you do use an IDE (Integrated Development Environment), many (though not all) of our labs come with projects pre-configured for Eclipse, IntelliJ and Visual Studio.
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