Deck 1

Question 1

Factory Method

Answer 1

Used to replace the class contractor, abstracting the process of object generation.

Question 2

Abstract Factory

Answer 2

Create instance of several classes belonging to different families.

Question 3

Builder

Answer 3

Separates an object construction from its representation

Question 4

Prototype

Answer 4

Creates a duplicate object or clone of object

Question 5

Singleton

Answer 5

Ensures that a class can only have one instance.

Question 6

Adapter

Answer 6

Match interface of different classes

Question 7

Bridge

Answer 7

Separates an objects abstraction from its implementation

Question 8

Composite

Answer 8

used to create tree structures or the hierarchical, recursive tree structures of the set of related objects where any of the elements of the structure may be accessed and utilized in a specific manner.

Question 9

Facade

Answer 9

A single class that represents an entire complex system

Question 10

Flyweight

Answer 10

Minimize memory usage by sharing as much data as possible with similar objects

Question 11

Proxy

Answer 11

Provides placeholder for underlying class or object

Question 12

Chain of Responsibility

Answer 12

Passes a request among a list or chain of objects.

Question 13

Command

Answer 13

Wraps a request under an object as a command and passed to the invoker object.

Question 14

Interpreter

Answer 14

Implements an expression interface to interpret a particular context.

Question 15

Iterator

Answer 15

Provides a way to access the elements of a collection object in a sequential manner without knowing its underlying structure.

Question 16

Mediator

Answer 16

Allows multiple objects to communicate with each other without knowing each other’s structure.

Question 17

Memento

Answer 17

Capture the current state of an object and store it in such a manner that it can be restored at a later time without breaking the rules of encapsulation.

Question 18

Observer

Answer 18

Allows an object (subject) to publish changes to its state and other objects (observer) that depend upon that object are automatically notified of any changes to the subject’s state.

Question 19

State

Answer 19

Alters the behavior of an object when its internal state changes.

Question 20

Strategy

Answer 20

Allows a client to choose an algorithm from a family of algorithms at run-time and gives it a simple way to access it.

Question 21

Visitor

Answer 21

Creates and performs new operations onto a set of objects without changing the object structure or classes.

Question 22

Template

Answer 22

Defines the basic steps of an algorithm and allows the implementation of the individual steps to be changed.