Modern Java · interview question
Why do teams use small dedicated types, such as 'ZipCode', in a domain model in production code?
Multiple choiceMediumchapter-7-curatedpremiummodern-javavalue-objects
Answer and explanation
Correct answer
C. They encapsulate validation and formatting logic.
Why
Using small dedicated types like 'ZipCode' encapsulates validation and formatting logic, ensuring that all instances are valid and formatted correctly according to the domain rules. This leads to cleaner and more maintainable code.
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