Object Oriented Programming

Question 1

What is UML?

Answer 1

Unified Modeling Language. UML helps you communicate the structure of your application to customers, managers, or other developers

Question 2

What is a class diagram?

Answer 2

A class diagram provides an overview of your class, including variables and methods.

Question 3

What is Inheritance?

Answer 3

Inheritance is when one class extends another class to reuse or build upon the inherited class’s behavior.

Question 4

What is a super class?

Answer 4

A super class is the class that is being inherited from.

Question 5

What is a sub class?

Answer 5

A sub class is a class that is inheriting from another class.

Question 6

What is Polymorphism?

Answer 6

Polymorphism occurs when one class can stand in for another class.

Question 7

What is Encapsulation?

Answer 7

Encapsulation is when you separate or hide one part of your code from the rest of the code.

Question 8

What is an Is-A relationship?

Answer 8

Is-A refers to inheritance. For example a dog is a pet.

Question 9

What is a Has-A relationship?

Answer 9

Has-A refers to composition or aggregation. For example, a dog has a nose.

Question 10

What is delegation?

Answer 10

Delegation is when an object needs to perform a certain task. Instead of doing that task directly, it asks another object to handle that task.