Explanations “Top Java Quiz Questions”

Which of the statements about this program is correct?

❌ A. It compiles and prints 14
❌ B. It compiles and prints 15
❌ C. The code will not compile because of line 4
❌ D. The code will not compile because of line 5
✅ E. The code will not compile because of line 6
❌ F. None of the above

Explanation:
The inherited interface method getNumOfGills(int) is implicitly public; therefore, it must be declared public in any concrete class that implements the interface. Since the method uses the default (package-private) modifier in the ClownFish class, line 6 does not compile, making option E the correct answer. If the method declaration was corrected to include public on line 6, then the program would compile and print 15 at runtime, and option B would be the correct answer.

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1.3K viewsMay 26, 2023 at 07:52

Which of the statements about this program is correct?

❌ A. It compiles and prints 14
❌ B. It compiles and prints 15
❌ C. The code will not compile because of line 4
❌ D. The code will not compile because of line 5
✅ E. The code will not compile because of line 6
❌ F. None of the above

Explanation:
The inherited interface method getNumOfGills(int) is implicitly public; therefore, it must be declared public in any concrete class that implements the interface. Since the method uses the default (package-private) modifier in the ClownFish class, line 6 does not compile, making option E the correct answer. If the method declaration was corrected to include public on line 6, then the program would compile and print 15 at runtime, and option B would be the correct answer.

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