What is Encapsulation?

A$.$ Encapsulation is a technique to define different methods of same type.

B$.$ Encapsulation is the ability of an object to take on many forms.

C$.$ Encapsulation is the technique of making the fields in a class private and

providing access to the fields via public methods.

D$.$ None of the above.

The relationship between an interface and the class that implements it is:

A$.$ Inheritance

B$.$ Aggregation

C$.$ Composition

D$.$ None

What is NullPointerException?

A$.$ A NullPointerException is thrown when calling the instance method of a null

object or modifying$/$accessing field of a null object.

B$.$ A NullPointerException is thrown when object is set as null.

C$.$ A NullPointerException is thrown when object property is set as null.

D$.$ None of the above.

Which of the following stands true about default modifier of class members?

A$.$ By default, variables, methods and constructors can be accessed by subclass

only.

B$.$ By default, variables, methods and constructors can be accessed by any class

lying in any package.

C$.$ By default, variables, methods and constructors can be accessed by any class

lying in the same package.

D$.$ None of the above.

Which of the following is true about private access modifier?