Which of the following statements about inheritance and polymorphism is true in Java?Question 23Answera.Inheritance and polymorphism are independent concepts and do not impact each other.b.Inheritance is a prerequisite for polymorphism.c.Polymorphism can only be achieved through method overloading.d.Inheritance and polymorphism cannot be used together in the same program.
Question
Which of the following statements about inheritance and polymorphism is true in Java?Question 23Answera.Inheritance and polymorphism are independent concepts and do not impact each other.b.Inheritance is a prerequisite for polymorphism.c.Polymorphism can only be achieved through method overloading.d.Inheritance and polymorphism cannot be used together in the same program.
Solution
The correct answer is b. Inheritance is a prerequisite for polymorphism.
Here's why:
a. Inheritance and polymorphism are not independent concepts. In fact, they are closely related as polymorphism in Java is achieved through inheritance.
b. This statement is true. Inheritance, which is a mechanism where one class acquires the properties (fields and methods) of another, is a prerequisite for polymorphism. Polymorphism allows us to perform a single action in different ways, and it's achieved in Java using method overriding, which requires inheritance.
c. This statement is false. Polymorphism is not only achieved through method overloading. It's also achieved through method overriding.
d. This statement is false. Inheritance and polymorphism can be used together in the same program. In fact, they often are, as polymorphism is typically achieved through inheritance.
Similar Questions
Which of the following statements about polymorphism in Java is true?Question 8Answera.Polymorphism allows an object to take on multiple forms at runtime.b.Polymorphism is achieved through method overriding.c.Polymorphism can only be applied to interfaces, not classes.d.Polymorphism is limited to compile-time behavior only.
Which of the following statements accurately summarizes the benefits of polymorphism in Java programming?Question 3Answera.Polymorphism improves code readability and enhances code reusability.b.Polymorphism restricts the flexibility of code execution.c.Polymorphism increases code duplication and hampers code maintenance.d.Polymorphism reduces the scalability of software systems.
e correct answerUsing which of the following, multiple inheritance in Java can be implemented?
In Java, what is the benefit of using inheritance?Question 4Answera.It allows for code reuse and promotes a hierarchical structure.b.It eliminates the need for polymorphism.c.It makes code more complex and harder to maintain.d.It reduces the performance of the program.
answerWhat is inheritance in Java?OptionsThe ability to create multiple instances of a classThe ability of a class to inherit fields and methods from its subclassThe ability to create new classes from existing classesThe ability of a subclass to inherit the fields and methods of its superclass
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