Which of the following is an illustration of good software design principles when designing a complex Java program?

Question

BlackTom AI · Accepted Answer

When evaluating good software design principles for a complex Java program, we should assess how each option promotes modularity, encapsulation, and maintainability.
Option a: 'using the public access modifier when defining fields' This choice weakens encapsulation because public fields expose internal state to any code, making it hard to enforce invariants or change implementation without affecting clients. It often leads to tight coupling and fragile code.
Option b: 'declaring fields for all attributes that might exist in a class, regardless of whether or not the program will use them' Preemptively adding unused fields increases memory usage, adds maintenance burden, and violates the principle of YAGNI (You Aren’t Gonna Need It). It can confuse developers about which fields are actually in use.
Option c: 'grouping all the data in the program into a single class' This promotes excessive coupling and violates the single responsibility principle. A monolithic class tends to be hard to test, modify, and reuse, and it makes understanding responsibilities more difficult.
Option d: 'grouping related data and methods together into the same class' This aligns with object-oriented design best practices: encapsulating related state and behavior within coherent classes, supporting modularity, reuse, and maintainability. It enables clear interfaces and responsibilities, which is desirable in complex software.
Option e: 'making accessor and mutator methods private' Accessors (getters) and mutators (setters) are typically used to expose controlled access to a class’s private fields. Making them all private would prevent necessary interaction from other classes and harm usability and proper interfacing; while visibility should be controlled, complete privatization would be impractical for normal operation.

Overall, option d most accurately reflects good software design principles by promoting cohesive, encapsulated structures that are easier to understand and maintain in a complex Java program.

Which of the following is an illustration of good software design principles when designing a complex Java program?单项选择题

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Which of the following is an illustration of good software design principles when designing a complex Java program?单项选择题

类似问题

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If one of the requirements in a university system is that a teacher can update keywords of a subject, which class would get an operation "update Keywords"?

Select the right description for each of the following objects: 1: Entity ____ 2: Data access ____ 3: Control ____ 4: Boundary ____

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希望你的学习变得更简单

Select the right description for each of the following objects: 1: Entity 2: Data access 3: Control 4: Boundary