Paper 2 Knolwedge

Question 1

What is a CLASS?

Answer 1

An extensible program-code-template for creating
objects, providing initial values for states (variables) and
implementations of behaviours

Question 2

What is an OBJECT?

Answer 2

Refers to a particular instance of a class, where
the object can be a combination of variables or data
structures (called states) and functions, procedures or
methods (called behaviours)

Question 3

What is DECLARATION?

Answer 3

A variable declaration with a variable name
with an object type

Question 4

What is INSTANTIATION?

Answer 4

The process of turning a class to an object

The ‘new’ key word is used to create the
object

Question 5

What is INITIALIZATION?

Answer 5

The ‘new’ keyword is followed by a call to a
constructor. This call initializes the new object

Question 6

What are the DISADVANTAGES of OOP?

Answer 6

1. Increased complexity for small problems
2. Unsuited to particular classes of problems

Question 7

What does STATIC mean?

Answer 7

The keyword ‘STATIC’ means you don’t need to create an object to use the method

It is used for a constant variable or method that is the same for every instance of a class