Modern Java · interview question

Given the following code snippet, identify the primary issue with the 'Email' value object:?

Multiple choiceHardchapter-7-curatedpremiummodern-javavalue-objects

java

class Email {
  private final String address;
  public Email(String address) {
    this.address = address;
  }
  // missing validation
}

The Email class lacks a proper hashCode implementation.The Email constructor should be private to enforce validation.The Email class should override the toString method.The Email class should be mutable to allow updates.

Answer and explanation

Correct answer

B. The Email constructor should be private to enforce validation.

Why

The Email constructor should be private to enforce validation through a static factory method or builder. This ensures that any instance creation goes through necessary validation logic, maintaining the integrity of the value object.

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Given the following code snippet, identify the primary issue with the 'Email' value object:?

Correct answer

Why

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