Which statement(s) are correct about the following code? (Choose all that apply)public class Rodent { protected static Integer chew() throws Exception { System.out.println("Rodent is chewing"); return 1; } }public class Beaver extends Rodent { public Number chew() throws RuntimeException { System.out.println("Beaver is chewing on wood"); return 2; } } *2 pointsA. It will compile without issue.B. It fails to compile because the type of the exception the method throws is a subclass of the type of exception the parent method throws.C. It fails to compile because the return types are not covariant.D. It fails to compile because the method is protected in the parent class and public in the subclass.E. It fails to compile because of a static modifier mismatch between the two methods.
Question
Which statement(s) are correct about the following code? (Choose all that apply)public class Rodent { protected static Integer chew() throws Exception { System.out.println("Rodent is chewing"); return 1; } }public class Beaver extends Rodent { public Number chew() throws RuntimeException { System.out.println("Beaver is chewing on wood"); return 2; } } *2 pointsA. It will compile without issue.B. It fails to compile because the type of the exception the method throws is a subclass of the type of exception the parent method throws.C. It fails to compile because the return types are not covariant.D. It fails to compile because the method is protected in the parent class and public in the subclass.E. It fails to compile because of a static modifier mismatch between the two methods.
Solution
The correct statements about the given code are:
C. It fails to compile because the return types are not covariant. E. It fails to compile because of a static modifier mismatch between the two methods.
Explanation:
C. In Java, the return type must be covariant, which means the return type must be the same, or a subclass, when a method is overridden in a subclass. Here, Integer and Number are not in the same hierarchy.
E. In Java, you cannot override a static method. If you declare the same method in a subclass, it becomes a new method; it does not override the method from the superclass. Here, the method chew() in the class Rodent is declared as static, but in the class Beaver, it is not. This is a static modifier mismatch.
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