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[Object] Chapter 2. Object-Oriented ProgrammingExplains the concepts of object-oriented programming and object, class, collaboration, inheritance, polymorphism, etc., through the implementation of a movie reservation system.

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April 28, 2024

[Object] Chapter 1. Object, DesignThis chapter explains the importance and concepts of object-oriented design in software development, emphasizing the necessity of object-oriented design through a ticket sales application example.

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April 28, 2024

[Effective Java] Item 6: Avoid Creating Unnecessary ObjectsCreating unnecessary objects can lead to memory waste, so for objects like strings or booleans, it's better to use literals or static factory methods.

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April 28, 2024

[Effective Java] Item 5: Prefer Dependency Injection to Hardwiring ResourcesLearn how to leverage dependency injection to enhance the flexibility and testability of your classes while eliminating explicit dependencies on resources.

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April 28, 2024