Quick study sessions to strengthen memory and retain key concepts.
Why do multi-object invariants matter?
Because correctness can depend on keeping several objects in sync together. A cart and a product can each…
View Card →How does immutability affect object references?
Immutability prevents modification, ensuring consistency. Immutable objects cannot be altered once created, making them thread-safe and predictable. In…
View Card →How do you ensure encapsulation in object design?
Use private fields and provide public getters/setters. Encapsulation hides an object's internal state and requires interaction through methods.…
View Card →What role do methods play in a Java class?
Methods define behavior and operations on objects. Methods are blocks of code that perform specific tasks in a…
View Card →What happens when you modify a shared object?
All references reflect the modification. Frame the concept in practical terms so you can explain it during interview…
View Card →How can design choices affect object interaction?
Design choices determine how objects interact and depend on each other. Decisions like whether to use composition or…
View Card →Why are constructors important in Java?
Constructors initialize new object instances. Constructors are special methods used to initialize objects. They set up initial states…
View Card →How should relationships be modeled in a store system?
Use composition to model strong relationships. Modeling relationships using composition allows objects to be composed of other objects.…
View Card →What are shared object usage pitfalls in beginner code?
Beginners may unintentionally modify shared objects. A common pitfall is accidental modification of shared objects. For example, if…
View Card →What's the difference between reference and copied data?
References point to the same object, while copied data is a separate instance. When you assign one object…
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