Test Preparation on JAVA Test Prep. - Inheritance | Kopykitab Learning Management System

1.

Which of this keyword can be used in a subclass to call the constructor of superclass?

1super
2this
3extent
4extends

2.

What is the process of defining a method in a subclass having same name & type signature as a method in its superclass?

1Method overloading
2Method overriding
3Method hiding
4None of the mentioned

3.

Which of these keywords can be used to prevent Method overriding?

1static
2constant
3protected
4final

Explanation: To disallow a method from being overridden, specify final as a modifier at the start of its declaration. Methods declared as final cannot be overridden.

4.

Which of these is correct way of calling a constructor having no parameters, of superclass A by subclass B?

1super(void);
2superclass.();
3super.A();
4super();

5.

At line number 2 in the following code, choose 3 valid data-type attributes/qualifiers among “final, static, native, public, private, abstract, protected”

1final, native, private
2final, static, protected
3final, private, abstract
4final, static, public

Explanation: Every interface variable is implicitly public static and final.


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Test Preparation on JAVA Test Prep. - Inheritance

Which of this keyword can be used in a subclass to call the constructor of superclass?

What is the process of defining a method in a subclass having same name & type signature as a method in its superclass?

Which of these keywords can be used to prevent Method overriding?

Which of these is correct way of calling a constructor having no parameters, of superclass A by subclass B?

At line number 2 in the following code, choose 3 valid data-type attributes/qualifiers among “final, static, native, public, private, abstract, protected”

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