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Statecharts: Modeling State-Dependent Responses to Events for Each Class, Slides of Object Oriented Programming

Bidhan Chandra Krishi Viswavidyalaya Object Oriented Programming

An overview of statecharts, their role in uml diagrams, and how they capture all possible responses of an object to use cases. It includes examples of statecharts for various classes such as course, cashcard, graderate, dropdownmenu, and garage door. Statecharts define the possible states and transitions of an object and the actions that occur when moving between states.

Typology: Slides

2011/2012

Uploaded on 07/17/2012

banani 🇮🇳

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Specifying Control

Lecture 24

Overview

nHow statecharts fit with other UML diagrams?

nStates and Events

nBasic statechart notation

nSome example statecharts

Control and State

nDifferent UML diagrams portray different aspects of

an Information System

nClass Diagrams

nStatic Structure

nInteraction Diagrams

nThe way in which objects interact

nStatecharts

nHow the system responds to events

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Discover Slides of Object Oriented Programming Bidhan Chandra Krishi Viswavidyalaya

Partial preview of the text

Download Statecharts: Modeling State-Dependent Responses to Events for Each Class and more Slides Object Oriented Programming in PDF only on Docsity!

Specifying Control

Lecture 24

Overview

n How statecharts fit with other UML diagrams?

n States and Events

n Basic statechart notation

n Some example statecharts

Control and State

n Different UML diagrams portray different aspects of

an Information System

n Class Diagrams

n Static Structure

n Interaction Diagrams

n The way in which objects interact

n Statecharts

n How the system responds to events

docsity.com

Statecharts

n Model "state dependent" responses to events

n One statechart for each class

n A statechart captures all possible responses of a

single object to all the use cases in which it is

involved

n Describes the possible life cycles an object of a class

can follow

Statecharts:

One Statechart for Each Class

Example:

Statechart for Course class

Initialization Open entry: Register student exit: Increment count

Closed

Canceled

do: Initialize course

do: Finalize course

do: Notify registered students

Add Student / Set count = 0

Add student[ count < 10 ]

[ count = 10 ]

Cancel

teach

Statecharts: Modeling State-Dependent Responses to Events for Each Class, Slides of Object Oriented Programming

Related documents

Partial preview of the text

Download Statecharts: Modeling State-Dependent Responses to Events for Each Class and more Slides Object Oriented Programming in PDF only on Docsity!

Specifying Control

Lecture 24

Overview

n How statecharts fit with other UML diagrams?

n States and Events

n Basic statechart notation

n Some example statecharts

Control and State

n Different UML diagrams portray different aspects of

an Information System

n Class Diagrams

n Static Structure

n Interaction Diagrams

n The way in which objects interact

n Statecharts

n How the system responds to events

docsity.com

Statecharts

n Model "state dependent" responses to events

n One statechart for each class

n A statechart captures all possible responses of a

single object to all the use cases in which it is

involved

n Describes the possible life cycles an object of a class

can follow

Statecharts:

One Statechart for Each Class

Example:

Statechart for Course class

Possible life cycles

docsity.com

Transitions and Events

n Transition

n Movement from one state to another

n Event

n Change event: condition become true

n Call event: receives a call from another object

n Signal event: receives a signal

n Time event: caused by passage of designated period of time

or after a specific event

Basic Statechart Notation

Basic Statechart Notation

Internal Actions and Activities

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Example

MenuVisible state for DropDownMenu

Example

Statechart for Garage Door

Example

Alternative statechart for Garage Door

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