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Which of the following is true about interfaces: A. Can not contain constants but can have variables. B. None of the items listed. C. All methods in an interface must be abstract. D. A class can only implement
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Which of the following is true about interfaces: A. Can not contain constants but can have variables. B. None of the items listed. C. All methods in an interface must be abstract. D. A class can only implement one interface. E. An interface can have only non abstract methods.

User Seongeun So
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2 Answers

7 votes

Answer:

C

Step-by-step explanation:

User Lithilion
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4 votes

Answer:

C. All methods in an interface must be abstract.

Step-by-step explanation:

User Ulrichb
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