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3 Cards in this Set
- Front
- Back
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Which are true? (Choose all that apply.) A. "X extends Y" is correct if and only if X is a class and Y is an interface. B. "X extends Y" is correct if and only if X is an interface and Y is a class. C. "X extends Y" is correct if X and Y are either both classes or both interfaces. D. "X extends Y" is correct for all combinations of X and Y being classes and/or interfaces. |
☑ C is correct.☐ A is incorrect because classes implement interfaces, they don't extend them. B is incorrectbecause interfaces only "inherit from" other interfaces. D is incorrect based on the precedingrules. (OCA Objective 7.6) |
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Which are true? (Choose all that apply.) A. "X extends Y" is correct if and only if X is a class and Y is an interface. B. "X extends Y" is correct if and only if X is an interface and Y is a class. C. "X extends Y" is correct if X and Y are either both classes or both interfaces. D. "X extends Y" is correct for all combinations of X and Y being classes and/or interfaces. |
☑ C is correct. ☐ A is incorrect because classes implement interfaces, they don't extend them. B is incorrect because interfaces only "inherit from" other interfaces. D is incorrect based on the preceding rules. (OCA Objective 7.6) |
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Which are true? (Choose all that apply.) A. "X extends Y" is correct if and only if X is a class and Y is an interface. B. "X extends Y" is correct if and only if X is an interface and Y is a class. C. "X extends Y" is correct if X and Y are either both classes or both interfaces. D. "X extends Y" is correct for all combinations of X and Y being classes and/or interfaces. |
☑ C is correct. ☐ A is incorrect because classes implement interfaces, they don't extend them. B is incorrect because interfaces only "inherit from" other interfaces. D is incorrect based on the preceding rules. (OCA Objective 7.6) |
