Computer MCQ

Which of the following arrow, points from subclass towards superclass?

Who enables creating classes as composition and aggregation of objects?

What is advisable to be used as “public” for protection purpose?

Specify the purpose of access modifiers.

Which members of the class are shared by all objects of the class?

How many times are static members allocated memory per class?

Which keyword is used to define class-variable and method?

Which of the following variables belong to each object?

What is called implicitly when an object is instantiated using ‘new’ operator?

Which of the following is the special method with the same name as class name with no argument and no return type?

Because of which type of relationship between ‘Library’ and ‘Room’, ‘Library’ class is not inherited from ‘Room’ class?

If we define class ‘Library’, it has a reading room, then which type of relationship exists between ‘Library’ and ‘Room’?

Which kind of relationship exists between ‘Library’ and ‘Room’?

What a class is referred as when a class includes objects of other class?

Which of the following shows “has-a” relationship?

Which relationship do composition and aggregation establish between classes?

Which of the following is a construction of classes that incorporates other object?

How many super classes are needed to derive a subclass?

Which kind of inheritance does Java not support?

‘protected’ members are available as the following type of members in the inherited subclass.

Which method is used to make private members available elsewhere?

Which of the following members are directly available in the class in which they are defined?

Instances having which of the following visibility are available for direct use in the entire package?

Which of the following syntax is used for not overriding the method in the subclass when superclass and subclass have methods with the same signature?

Which method is said to be overridden in the subclass when superclass and subclass have methods with the same signature?

Which class is not a subset of superclass?

Which keyword is used to call the constructor of superclass in the constructor of subclass?

Which keyword is used to create a subclass in the class definition?

Which is the class that usually contains more information and methods than its superclass?

What is inherited in a subclass?

What is not inherited in a subclass?

Which of the following variables and methods does a subclass contain?

Which of the following does a subclass inherit from the superclass?

To which of the following classes are common features kept?

Which type of class is child class known as?

Which type of class is parent class known as?

Classroom is a Room and student is a Person. Here, which type of class is called ‘Room’ and ‘Person’ as well?

Which of the following allows us to build new class with added capabilities by extending existing class?

Using which of the following, object-oriented programming languages provide reusability feature?

Which type of relationship does inheritance have between two classes?

Which parameters are not affecting actual parameters on making changes to them?

The values of which of the following parameters are copied to formal parameters and then function is executed?

Which of the following variables can be passed as parameters?

While using access or and mutator method, it is a must to write ‘get’ and ‘set’ method for the following one only.

Which of the following minor inconvenience will reward us with an ease of reusability and maintenance?

Which of the following method seems little difficult to write?

Use of which of the following methods will prevent the variables from getting directly accessed and modified by other users of the class?

Which of the following is an example of “getter” method (Access or method)?

What is mutator method also known as?

What is access or method also known as?