Imagine a scenario where a project utilizes several classes extending a single superclass. If a method in the superclass is modified, how might this impact the subclasses, and what precautions should be taken?

  • a. Modifying the superclass method may break the functionality of the subclasses. Precaution: Extensively test the subclasses after the modification.
  • b. Modifying the superclass method won't affect the subclasses if they don't override it. Precaution: Ensure that subclasses are not overriding the method in question.
  • c. Modifying the superclass method will automatically update all subclasses. Precaution: No specific precautions are needed.
  • d. Modifying the superclass method will result in a compilation error in the subclasses. Precaution: Avoid modifying the superclass method.
When a superclass method is modified, it can impact the functionality of subclasses that depend on it. Therefore, option (a) is correct. Extensive testing of subclasses is essential after any such modification. Option (b) is incorrect because subclasses that don't override the method may still rely on its behavior. Option (c) is not true; superclass changes don't automatically affect subclasses. Option (d) is incorrect as Java allows superclass method modification, and there won't be compilation errors.
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