which of the following statement(s) is(are) true?1)An abstract class cannot have any final methods2)A final class may not have any abstract methodsA. Both statement 1 and 2B. Only statement 1C. Only statement 2D. None of them
Question
which of the following statement(s) is(are) true?1)An abstract class cannot have any final methods2)A final class may not have any abstract methodsA. Both statement 1 and 2B. Only statement 1C. Only statement 2D. None of them
Solution
To determine which statement(s) are true, let's analyze each statement one by one:
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An abstract class cannot have any final methods. This statement is true. In Java, an abstract class is meant to be extended by other classes, and it can have abstract methods that are meant to be implemented by its subclasses. However, a final method cannot be overridden, so it contradicts the purpose of an abstract class.
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A final class may not have any abstract methods. This statement is also true. In Java, a final class is a class that cannot be extended. Since abstract methods are meant to be implemented by subclasses, it would not make sense to have abstract methods in a final class that cannot be extended.
Based on the analysis above, the correct answer is: C. Only statement 2
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