UML III - Object-Oriented Programming II - Notes | CMSC 132, Study notes of Computer Science

Download UML III - Object-Oriented Programming II - Notes | CMSC 132 and more Study notes Computer Science in PDF only on Docsity!

CMSC 132:

Object-Oriented Programming II

UML III

Department of Computer Science

University of Maryland, College Park

UML Examples

Read UML class diagram Try to understand relationships Examples

Pets & owners Computer disk organization Banking system Home heating system

UML Example – Veterinary System Try to read & understand UML diagram •^

1 or more Pets associated with 1 PetOwner

UML Example – Computer System

Try to read & understand UML diagram

UML Example – Banking System

Try to read & understand UML diagram

UML Example – Banking System

-^

1 Bank associated with 0 or more Accounts

-^

Checking, Savings, MoneyMarket are Accounts

UML Example – Home Heating System

•^

Each Thermostat is associated with 1 Room

-^

Each Thermostat associated with 0 or more Heaters

-^

ElectricHeater is a specialized Heater

-^

AubeTH101D is a specialized Thermostat

UML Class Diagrams

↔↔↔↔

Java

Different representation of

same

information

Name, state, behavior of class Relationship(s) between classes

Practice deriving one from the other

Accurately depicting relationship between classes

UML

→→→→

Java : Veterinary System

UML Java^ class Pet {

PetOwner myOwner;

// 1 owner for each pet

} class PetOwner {

Pet [ ] myPets;

// multiple pets for each owner

Java

→→→→

UML : Veterinary System

Java^ class Pet {

PetOwner myOwner;

// 1 owner for each pet

} class PetOwner {

Pet [ ] myPets;

// multiple pets for each owner

} UML

UML Class Diagrams

↔↔↔↔

Java

UML Java^ class Pet {

PetOwner myOwner;

// 1 owner for each pet

} class PetOwner {

Pet [ ] myPets;

// multiple pets for each owner

UML

→→→→

Java : Computer System

UML Java

UML

→→→→

Java : Computer System

UML Java

Design code using all available information in UML…

UML

→→→→

Java : Computer System

Java^ class CPU {

Controller [ ] myCtlrs; } class Controller {

CPU myCPU; } class SCSIController extends Controller {

DiskDrive [ ] myDrives = new DiskDrive[4]; } Class DiskDrive {

SCSIController mySCSI; }