OBJECT ORIENTED PROGRAMMING WITH JAVA

Composition uses the concept of ___________ relationship.

• has-a

• is-a

• one-to-one

• one-to-many

Inheritance can use the concept of ___________ relationship.

• has-a

• is-a

• one-to-one

• one-to-many

An abstract method is a method ____________

• with a return statement

• which cannot be overridden

• with a return statement and can be overridden

• with no definition

In the JAVA programming language, the concept of keeping data private is known as __________.

• polymorphism

• information hiding

• static binding

• inheritance

A(n) ________________is a blueprint that defines the variables and the methods common to all objects of a certain kind.

• Class

• Abstraction

• Encapsulation

• Inheritance

Composition is also known as

• Modularity

• Encapsulation

• Aggregation

• Instantiation

Choose the FALSE statement about abstract class

• It is a superclass with generic behaviour

• Definition of abstract method is implemented in subclass

• Subclasses must implement all the abstract methods in the superclass

• Abstract class must have more than one abstract method

_______________ is a key concept, enabling an object of a subclass to be treated like an object of its superclass.

• Classes and subclasses

• Data abstraction

• Static polymorphism

• Information hiding

Which of the following is NOT a key concept in object-oriented programming?

• Polymorphism

• Encapsulation

• Abstraction

• Iteration

Which of the following is true about method overloading?

• It allows a method to have different return types

• It is not possible in Java

• It involves creating multiple methods with the same name but different parameters

• It can only be done in abstract classes